These folks my girlfriend babysit for want me to help them with their 13 year old son who has a few complications. He's a little autistic they just found out, he's really shy, he has low self-esteem and he has an excessive eating disorder which has been causing him to gain a lot of weight in the recent years. We're not quite sure yet if he eats excessively for comfort or because he has a genetic disorder where he never feels full. They want me to help motivate him and raise his self-esteem while helping him lose weight. I was wondering if any of you can give me some tips on what kind of activities and diet related methods I could use to help him out to help his self esteem as well as get that heart rate up to burn calories. He likes football and basketball so for the first few times I think shooting hoops and throwing around the ball would be a good starter and a good way to get to know him, but I want to develop a progressive plan where I can get him to progress with body weight exercises as well as cardiovascular health.