Bench Jack Knife Exercise Video

Exercise Instructions:

Lay down on your back on a flat bench with your legs hanging off one end. Extend your arms out above your head, and straighten your legs. You should be laying completely flat. This is the start of the exercise. In one motion keeping your hands and feet together, raise your legs and bring your arms forward as if you were trying to touch them together. Lower back to the starting position. Repeat for desired reps.

Tips & Advice:

This is a very challenging exercise, the slower you do it the harder it is, and the more benefit you will get from it.

More Bodyweight Abs Exercises:

1. Sit Up
2. Floor Crunch (legs on bench)
3. Twisting Bench Crunch
4. Twisting Floor Crunch
5. Lying Floor Leg Raise
6. Lying Alternate Floor Leg Raise
7. Lying Floor Knee Raise
8. Lying Alternate Knee Raise
9. Lying Bench Leg Raise
10. Lying Leg Raise With Hip Thrust
11. Lower Abdominal Hip Roll
12. Abdominal Pendulum
13. Reach And Catch
14. Alternate Reach And Catch
15. Decline Sit Up
16. Twisting Decline Sit Up
17. Decline Abdominal Reach
18. Decline Bench Knee Raise
19. Decline Bench Alternate Knee Raise
20. Decline Bench Leg Raise
21. Decline Bench Alternate Leg Raise
22. Decline Leg Raise With Hip Thrust
23. Side Crunch
24. Side Crunch With Leg Lift
25. Plank
26. Side Plank
27. Plank With Feet On Bench
28. Hip Thrusts
29. Abdominal Air Bike
30. Seated Leg Tucks
31. Floor Toe Reach
32. Lying Heel Touches
33. Russian Twist
34. Hanging Leg Raise
35. Hanging Knee Raise
36. Twisting Hanging Knee Raise
37. Roman Chair Knee Raise
38. Roman Chair Twisting Knee Raise
39. Chair Leg Raise

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Exercise Pictures:

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