Hi, i am 16 years old, 5'8 and a half, and 161 lbs. I play linebacker for my school. I run the 40 in 4.9 seconds. What i want to know is what would happen if i lost weight and dropped to about 150. Would it make me hit less harder? I want to do it because i think it would make me faster, and because when i am 161, only the top half of my abs show. So would losing 10 pounds make me weaker but faster? Also, if i got faster should i just play safety?