I train kickboxing, karate, bjj and then mma to tie it all together. Real men fight. Im 6' slim and toned. Im no meathead but Im fast, flexible, technical, and slippery when grappling. All of the muscley guys Ive trained with have less gas than me so I can out last them then finish with a submission.
For my build I drop bombs with a killer high kick.
I dont understand how anyone can be fat in western society. There is a gym on every corner, a massive array of sports in every city and healthy or diet food can be bought ready made. Dont make out exercise is a chore, its fun. Just find something you enjoy.