pushups, plyometric pushups, hindu pushups, plank exercises, pullups, chinups, crunches, jumping jacks, sprints, stairs, dips, squats, wallsits
just off the top of my head. not all power workouts, but you need cardio too.
His helmet was stifling, it narrowed his vision. And he must see far. His shield was heavy. It threw him off balance. And his target is far away.