a javelin thrower is very very complete, different than other throwers. They run jump lift, pfff is very complicated. But they are not that muscular or big, they do a lot of powerlifting though..
Javelin throwers like myself, do specific weight lifting. Like power lifts to increase explosiveness. You do workouts that increase flexibility, and increase arm velocity. Also just overall strength like squats and things
Javelin is a very difficult sport. It might seem easy for someone who has never done it right. Many people throw wooden sticks around for fun but that's not how it goes in reality. It's not all about maximum power. In fact some people say the bigger your muscles get, the harder it is to throw.
