I had an Int analyst working for me who was in to body building. His shoulder and neck muscles were so big - and in reality, deformed - he struggled to fit on webbing harnesses etc and at full extension the belt would rest just below his nipples. A strange sight. And not Russian.
One of the Catering Corps lads at one posting was into the body beautiful. The thing is he looked like Adonis from the waist up and his legs looked like spindly noodles as he never worked on them.
The Americans are into op massive big time starting at High School when they are on one of the multitude of more or less compulsary to join school athletic/sports teams. My lads school has a weight room that is huge, full of machines and free weights......then I hear tales of 14 year olds who have blown out knees, or shoulders by overdoing it. Or they take steroids to get big enough to make the school American footie team to guarantee themselves an offer from a college/university team and receive a fee's paid education at uni.