do what too few people in today's world do----read books
Play football
Join UK sport radio and you work about half or full time, I suggest you to interview any straight footballers players in the changing room and let they gangb*ng you in that way.
But if you are 16, you better work in the plane and start make a conversation with pilot while he's driving and even make a conversation with bird, you can spend your whole energy by fashion show in airplane.
Ever try MMA? Great sport for channeling your inner-energy, Even if you're not a violent person, its still great for meditation or for just your overall well-being.
Wrestle, it teaches character, hard work, discipline, and will get you ripped.