Fast & Furious: 21 Day Shredding Workout Cycle And Diet

Ian Coleman
Written By: Ian Coleman
May 27th, 2020
Updated: March 24th, 2021
Categories: Workouts Fat Loss
2.9M Reads
Fast & Furious: 21 Day Shredding Workout Cycle And Diet
This 3 week fat burning cycle focuses on low-carb food choices and hardcore workouts that restrict rest between sets, finishing with intense 15 minute cardio sessions.
Workout Summary

Workout Description

No, this article isn't a gimmick. It wasn't written to fool people into thinking they can get shredded in only 21 days. I call this program "fast and furious" because:

Fast - You are eating only 1/3rd of your daily calories before dinner. This will feel like fasting for most of you, and is only one step away from intermittent fasting.

Furious - Workouts are fast-paced, exhausting, exhilerating and calorie-burning.

This workout and eating plan is a fat loss cycle based around a 21 day schedule. It can be run once if you only need to knock off a quick 5-15 pounds, or multiple times if you have more weight to lose.

Recommended: Need help losing fat? Take our Free Fat Loss Course

21 Day Cycle Expectations

This cycle is designed to strip away fat while maintaining muscle tissue. It can help you achieve that ripped or toned look you are after.

During the first week of a reduced calorie and carbohydrate diet, you will flush a lot of excess water and lose weight rapidly. This is neither unhealthy, nor an indication of what your rate of weight loss will be like during weeks 2 and 3. With that said, men should expect to see an 8 to 12 pound loss during these 3 weeks, and women will likely lose 5 to 10 pounds. 

If you continue to run this program, your rate of overall weight loss will slow during the second and third cycles. You have already flushed out quite a bit of excess water weight, so from this point forward the majority of your weight loss will be fat loss. Men should lose about 5 to 10 pounds during the second cycle, and women 3 to 6 pounds.

These 21 day cycles are perfect for individuals who gained extra weight during the past 6 months, and need to drop just a little fat to get back to a more normal weight. I don't recommend running these cycles more than twice, maybe three times max.

So, if you're ready to look better at the beach, let's get moving.

shredded man doing chest press

Learning the Basics

Here are the basics of each 21 day cycle:

  • Limited Pre-Workout Meals - You will be eating lighter during the day, and consuming the bulk of your calories during a 4 hour window each night.
  • Resistance Training - There will be 4 gym workouts per week, focusing on limited rest between sets.
  • Cardio - Intense 15 minute cardio sessions will follow each resistance training workout. Additional cardio is optional, but examples are provided below.

This is not a beginner workout. If you do not have an understanding of the exercises used in this program, please take some time to learn them before attempting this plan. Also note that 2 eating plans are provided: a 2,100 calorie per day plan for men, and a 1,500 calorie per day plan for women.

Here is a sample workout schedule. You can play with the days anyway you want, as long as there are 2 days of rest in between upper body workouts, or 2 days of rest between lower body workouts.

  • Monday - Upper Body Workout A
  • Tuesday - Lower Body Workout A
  • Thursday - Upper Body Workout B
  • Friday - Lower Body Workout B

Rest between each set is exactly 30 seconds. Keep the same weight for each set of a given exercise. For example, when performing the dumbbell bench press, if you are using 50 pound dumbbells, use the same weight for each set.

Make sure to pick a starting weight that allows you to perform the stated sets and reps. If you are unable to perform all the reps for each listed set, lighten the weight load the next time you perform this exercise. On the other hand, if a weight doesn't feel challenging enough, add weight the next time you perform this exercise.

Optional Cardio

You can add in an optional cardio workouts:

  • First thing in the morning.
  • On off days.
  • At least 4 hours before a resistance training workout, or at least 3 hours after resistance training.

These optional workouts don't have to be boring. You can go for a walk, go hiking, swimming, running, do hill sprints, etc.

Fit female

21 Day Shredding Workout

Workout A - Upper Body

Exercise Sets Reps
Dumbbell Bench Press 8 8
Seated Cable Row 8 8
Machine Overhead Press 8 8
Cable Curl 6 8
Skullcrushers 6 8

Workout B - Upper Body

Exercise Sets Reps
Machine Chest Press 8 8
Lat Pull Down 8 8
Seated Overhead Dumbbell Press 8 8
EZ Bar Curl 6 8
Cable Tricep Extensions 6 8

Workout A - Lower Body

Reps

Exercise Sets Reps
Leg Press 8 8
Leg Curl 8 8
Leg Extension 6 8
Seated Calf Raise 8 8
Planks 6 30 sec

Workout B - Lower Body

Exercise Sets Reps
Hack Squat 8 8
Dumbbell Stiff Leg Deadlift 8 8
Goblet Squat 6 8
Leg Press Calf Press 8 8
Hanging Knee Raise 6 15

Shredding Workout FAQ

Do I have to use the dumbbell bench press?

No. You can use any dumbbell or barbell bench press variation.

Do I have to use machine exercises?

No. You can use any suitable dumbbell or barbell exercise replacement.

Can I use pull ups instead of lat pull downs?

Yes.

Can I use barbell rows instead of seated cable rows?

Yes.

Can I use squats instead of leg press?

You could, but the muscle soreness will be unbearable. This is a rest-pause workout. Squats might leave you in pain for a week to come.

Isn't this a lot of sets?

Yes, but it's a rest-pause workout. Because you are restricting rest in between sets, the amount of weight you will be using for each exercise will drop slightly. So while the volume is increasing, the intensity is decreasing.

Mountain climbers outside

21 Day Cycle Cardio Workout

Perform the following cardio workout after each resistance training session. If you are pressed for time (or the gym is packed), you can also perform this session later in the day or first thing in the morning on your training days.

For this cardio workout you will need:

This cardio session should take you around 15 minutes, or maybe longer. Perform the following sequence 5 to 6 times through using no rest between exercises and treadmill work. 

Cardio Workout 

Exercise Reps
Push Ups 10
Jumping Jacks 20
Burpees 10
Treadmill walking - slow & steady pace 30 seconds
Lying Floor Knee Raise 20
Jump Squats 10
Mountain Climbers 20 each leg
Treadmill walking - slow & steady pace 30 seconds

Diet Plan For Men

This eating plan restricts food consumption prior to 5 pm. You will focus on low carb, high fat, high protein eating. Dinner (your main meal) should be eaten around 5-6 pm, and your pre-bed snack around 8-9 pm.

Here is the meal plan schedule for men:

  • 8 am - 3 scrambled eggs (large) cooked in 2 pats of butter, with any veggies you prefer such as peppers, diced onion, mushrooms, spinach, etc. This meal contains about 330 calories and 20-22 grams of protein.
  • 11 am - Whey protein shake, 3 fish oil softgels and 3 ounces of strawberries or blueberries. This meal contains about 157 calories and 22-25 grams of protein.
  • 2 pm - 2 pieces of regular fat string cheese and one ounce of almonds. This meal contains about 324 calories and 22 grams of protein.
  • Dinner (post-workout) - Pick from one of the 3 dinner choices below.
  • Pre-bed Snack - Casein protein shake, 3 fish oil softgels and a medium apple. This meal contains about 213 calories and 25 grams of protein.

Dinner - Meal 1

  • 10 ounces of baked, boneless and skinless chicken breast. (312 calories and 65 grams of protein)
  • Sour cream and salsa topping for chicken breast. Combine 2 ounces of full-fat, natural sour cream with 2 ounces of salsa. (141 calories and 2 grams of protein)
  • Spinach salad. 2 cups of spinach, 2 tablespoons of olive oil along with 4 tablespoons of red wine vinegar (dressing), salt and pepper to taste, 1/2 diced onion, 10 halved cherry tomatoes, 3 ounces of diced mozzarella (full-fat) cheese, one ounce of diced black olives. (631 calories and 23.2 grams of protein)

Dinner - Meal 2

  • 8 ounces of 70% lean ground beef mixed with 1/2 packet of taco seasoning mix, and topped with 2 ounces of guacamole. (743 calories and 60 grams of protein)
  • Place the beef over a bed of: 2 cups of shredded lettuce, 1/2 cup fresh salsa, 1/2 cup shredded (full-fat) cheddar cheese, and one ounce of sour cream. (343 calories and 15.6 grams of protein)

Dinner - Meal 3

  • 8 ounces of salmon. (466 calories, 50 grams of protein)
  • Lemon butter sauce for salmon: 3 melted pats of butter combined with the juice of one lemon and 1/2 tablespoon of minced garlic. (112 calories)
  • Spinach salad. 2 cups of spinach tossed with a dressing of 2 tablespoons of balsamic vinegar and 2 tablespoons of olive oil, 1 ounce of walnuts, and 1 ounce of dried cranberries. (518 calories and 3.6 grams of protein)

Lat pull downs

Diet Plan For Women

Here is the meal plan schedule for women:

  • 8 am - 2 scrambled eggs (large) cooked in 2 pats of butter, with any veggies you prefer such as peppers, diced onion, mushrooms, spinach, etc. This meal contains about 260 calories and 14-16 grams of protein.
  • 11 am - Whey protein shake, 3 fish oil softgels and 3 ounces of strawberries or blueberries. This meal contains about 157 calories and 22-25 grams of protein.
  • 2 pm - 1 piece of regular fat string cheese and one ounce of almonds. This meal contains about 244 calories and 16 grams of protein.
  • Dinner (post-workout) - Pick from one of the 3 dinner choices below.
  • Pre-bed Snack - Casein protein shake and 3 fish oil softgels. This meal contains about 143 calories and 25 grams of protein.

Dinner - Meal 1

  • 6 ounces of baked, boneless and skinless chicken breast. (187 calories and 39 grams of protein)
  • Sour cream and salsa topping for chicken breast. Combine 1 ounce of full-fat, natural sour cream with 1 ounce of salsa. (71 calories and 1 gram of protein)
  • Spinach salad. 2 cups of spinach, 2 tablespoons of olive oil along with 4 tablespoons of red wine vinegar (dressing), salt and pepper to taste, 1/2 diced onion, 5 halved cherry tomatoes, 1.5 ounces of diced mozzarella (full-fat) cheese. (432 calories and 16 grams of protein)

Dinner - Meal 2

  • 6 ounces of 70% lean ground beef mixed with 1/2 packet of taco seasoning mix, and topped with 1 ounce of guacamole. (545 calories and 44 grams of protein)
  • Place the beef over a bed of: 1 cup of shredded lettuce, 1/2 cup fresh salsa, and 1/4 cup shredded (full-fat) cheddar cheese. (161 calories and 7.6 grams of protein)

Dinner - Meal 3

  • 6 ounces of salmon. (350 calories, 37.6 grams of protein)
  • Lemon butter sauce for salmon: 2 melted pats of butter combined with the juice of one lemon and 1/2 tablespoon of minced garlic. (76 calories)
  • Spinach salad. 2 cups of spinach tossed with a dressing of 2 tablespoons of balsamic vinegar and 2 tablespoons of olive oil, 1/2 ounce of walnuts and 1/2 ounce of dried cranberries. (254 calories and 2.7 grams of protein)

Diet Plan FAQ

What if I don't like the meal choices?

These meal choices are merely examples. You can swap in any protein source, fats and veggies. Just make sure you are not eating rice, potatoes, oatmeal or any other non-fruit or veggie carbs.

For men, dinner calories should equal around 1,076. For women, calories should come to around 690.

Do I need to use casein and whey protein?

No. You can swap in any protein foods as long as the calories come to about 120.

Post your post-workout swolfies in M&S gear on IG and tag @muscleandstrength, #muscleandstrength, or DM them to us to get a shoutout on Muscle & Strength stories!

834 Comments
J
Posted on: Thu, 03/09/2023 - 08:08

Going to a work event can I consume an alcoholic beverage? Low calorie?

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Roger
Posted on: Wed, 03/22/2023 - 16:43

As long as you keep it to one, you should be fine.

Drink responsibly and good luck.

Jake Ruele
Posted on: Tue, 03/07/2023 - 13:05

Is sugar a total no-no on this diet? Can I have a soda with my evening meal? What about alcohol consumption? Glass of wine?

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Roger
Posted on: Wed, 03/22/2023 - 16:24

No artificial sugar or soda at all. Fruit would be fine. A glass of wine should be okay, but not much more than that.

Anna
Posted on: Mon, 02/27/2023 - 14:22

Are the dinner protein ounces measured raw or cooked?

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Roger
Posted on: Mon, 02/27/2023 - 15:04

They are raw measurements from my understanding.

Brittany
Posted on: Fri, 02/24/2023 - 18:36

What substitution can I use for red wine vinegar sauce and balsamic vinegar sauce ?

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Roger
Posted on: Mon, 02/27/2023 - 08:23

The answer to that question depends on the reason, Brittany. Why are you wanting to sub them out?

Jenn
Posted on: Tue, 02/21/2023 - 14:47

I like to play volleyball and/or tennis once or twice a week. I burn about 500-800 calories when I do play. How can I incorporate that into this plan? Should I eat more on those days?

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Roger
Posted on: Sun, 02/26/2023 - 21:49

You can eat additional protein and slow-digesting carbs before those sessions, Jenn. Just plan them in as you would during a normal week.

Samantha
Posted on: Fri, 02/10/2023 - 08:00

Hello, this looks great. I have downloaded it to start on Monday. What sort of weight should I be doing for the dumbbellpress for example. I usually do 8kg in each hand. Should I be doing lower weights? Or stick to what I've been doing

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Roger
Posted on: Thu, 02/16/2023 - 16:43

Stick to what you can do with the goal of improving.

Phil
Posted on: Tue, 01/31/2023 - 02:46

Hi what is the best way to keep fibre intake good during this shred. I normally get from oatmeal fruit etc. Thanks

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Roger
Posted on: Thu, 02/16/2023 - 16:42

Those are my go to's as well. You could supplement with fiber as well if you liked.

Wendy
Posted on: Tue, 01/31/2023 - 00:00

Hi there, for the women’s diet. When I added all the foods on my fitness pal it says I’m eating about 70g of fats and about 30g of carbs. Also for 6oz of chicken breast that’s about 52 g of protein not 39g as stated above. Essentially I’ll be eating about 150g protein. Does that sound about right? I also work out at 5am and I just can’t physically eat anything before my workout, would that affect me in any way? Any response would help, thank you.

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Roger
Posted on: Thu, 02/16/2023 - 16:42

Apologies for the delay answering this one. That sounds right according to this particular program. You're supposed to eat before you train so your muscles can have that nutritional support. What I would say is that if you eat a big meal before bed, then you may be ok training fasted. Again, definitely not recommended but you could try it and see how it goes for you.

Remah
Posted on: Mon, 01/30/2023 - 02:16

Thanks for this great workout but I am wondering can I do these exercise if I have back pain?
Do i have to lift heavy to see result?

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Roger
Posted on: Thu, 02/09/2023 - 19:22

You have to give a solid effort, that would require you to feel challenged. Outside of that, see a physician about your back.

Remah
Posted on: Fri, 02/17/2023 - 08:13

Thanks for your reply .

Kathy L
Posted on: Sun, 01/29/2023 - 22:25

Can legumes and lentils be used as a source of protein and fiber?

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Roger
Posted on: Wed, 02/15/2023 - 12:26

Sure can!

CoachAxe
Posted on: Sun, 01/29/2023 - 20:35

Is the meal plan the same for non workout days including weekends?

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Roger
Posted on: Thu, 02/09/2023 - 19:21

Yes

Charlie
Posted on: Sun, 01/29/2023 - 17:12

Is this a circuit work out

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Roger
Posted on: Thu, 02/09/2023 - 19:21

The cardio workout is circuit style, but the others are not.

Andy L
Posted on: Sun, 01/29/2023 - 07:58

Great plan - question though , in terms of weight what percentage of my max weight should I go with for sets in this program (80 percent less)?

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Roger
Posted on: Sun, 01/29/2023 - 12:13

I don't think weight percentage was factored into this program, but 75 or less would be what I suggest starting with. If you find that isn't challenging enough, bump it up to 80.

Marcus Ferlini
Posted on: Tue, 01/24/2023 - 10:14

I’m having a bit of a hard time understanding the workout schedule for the cardio part, for example, am I supposed to do all those cardio workouts in order after every workout session? Then I’m supposed to do those cardio workouts rotating them until I hit over 15 minutes? How does that work?

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Roger
Posted on: Thu, 01/26/2023 - 20:25

Hi, Marcus. Yes, the cardio is after the workouts. And yes, rotate the movements until 15 minutes has passed.

Naomi
Posted on: Mon, 01/23/2023 - 15:41

I have an egg allergy, what is best to replace? X

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Roger
Posted on: Tue, 01/24/2023 - 07:21

Greek yogurt is a solid substitution. Hope this helps.

Jon
Posted on: Wed, 01/11/2023 - 13:01

I saw great results the first time I did this workout. I've just started it again but I have a question about the fish oil softgels.... I took 6 last time but I assume I went way over as the pills that I can find are 1000mg minimum. 6000 mg per day seems like it would be too much. Does anyone know the actual mg we are supposed to be taking?

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Roger
Posted on: Wed, 01/18/2023 - 21:59

What brand are you taking, specifically?

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Roger
Posted on: Wed, 01/18/2023 - 21:59

What brand are you taking, specifically?

Kym
Posted on: Sun, 01/08/2023 - 05:34

I'm not sure if anyone is reading the comments on this thread still, however I just want to know what is a good stubstitute for eggs if you do not eat them? Have scrolled through a large portion of the comments, but cannot find anything.

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Roger
Posted on: Wed, 01/18/2023 - 21:59

We're here. Vegan diet? What other restrictions do you have? Let me know so I can make the best recommendation.

Kym Jones
Posted on: Thu, 01/19/2023 - 16:24

Hey, not a vegan :) I'm happy to eat dairy products (but never been a plain milk drinker even as a child), and will eat my weight in cheese if left unsupervised lol. I have tried eating eggs in the past, but the smell/texture etc set off my gag reflex which is interesting as I grew up on a farm and ate a lot of farm fresh eggs, but as I'm older (40) my tastes have changed.

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Roger
Posted on: Tue, 01/24/2023 - 07:21

Greek yogurt is a solid go-to for me in the morning or when I need protein. Give that a shot.

Larry
Posted on: Wed, 01/04/2023 - 00:46

Can I take creatine while doing this program?

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Roger
Posted on: Tue, 01/17/2023 - 13:39

Sure can!

Tom Green
Posted on: Mon, 01/02/2023 - 13:01

Can I take BCAA's and Creatine in my workouts with this fast and furious routine? Thanks

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Roger
Posted on: Sun, 01/15/2023 - 10:58

Sure can! Go for it!

Rahul
Posted on: Tue, 12/20/2022 - 18:31

Hello I’m currently up early working and going to gym around 3pm-6pm after work should I always eat my big dinner right after gym? And I’m trying 2000cals 190 protein , 75 carbs, 100-120 fat . Im going on a trip and built a pretty good amount of muscle. My job is sedentary so doing lower: currently weigh 210lbs

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Roger
Posted on: Tue, 12/27/2022 - 08:52

Hey Rahul, you can eat the big meal afterwards, but don't feel obligated to. You could eat the big meal before the gym so you have more energy for the training after work if you like. Just make sure you eat something after you train for the recovery. I also suggest keeping the fats to 100 instead of 120.

Congrats on the progress and enjoy that trip.

John BINFORD
Posted on: Thu, 12/15/2022 - 10:16

Regarding weight selection, doing 8 sets with only 30 second rest will mean you won’t be able to hit rep goal for 8 sets. Best to start with a weight you’d normally get around 10 reps? Might look something like this over 8 sets: 8 8 8 7 6 6 5 4.

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Roger
Posted on: Fri, 12/23/2022 - 12:41

I would suggest starting with something that you can do for as many as 12 reps if 8x8 is the goal. Once you get all 64 total reps, then add five pounds and try to do that on the next workout.

Luke
Posted on: Thu, 11/24/2022 - 21:44

Hey there! I’m going to run this program as I’m three weeks out from my wedding and need to trim a little bit of fat. I do have one question around training time. It seems the program is geared towards afternoon training. Currently I’m a morning trainer. If I train in the mornings would it be a case of moving the main meal to directly after my workout? Or would you recommend training in an afternoon instead?

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Roger
Posted on: Sat, 11/26/2022 - 12:53

Moving the main meal to directly after the workout will be fine, Luke. If training in the morning is good for you, do that. Congratulations in advance for your wedding and thanks for reading M&S!

Luke
Posted on: Sat, 11/26/2022 - 12:57

Thanks for the quick response Roger! I’ll post progress in three weeks! All the best.

Paul Tackes
Posted on: Wed, 11/23/2022 - 08:57

This program looks like it would be perfect for me! My only question is I work out at 4 AM. Do I have to switch the meals in anyway? Also, is it possible to do this while intermittent fasting or is it better to eat constantly throughout the day? Currently my eating window has been from Noon-8pm. Thank you so much. This is gonna be the jumpstart I need!