all answers should contain a simple formula... which suprising some dont!!
1. Be active every day!!! play a sport, workout, do insanity/p90x, crossfit... whatever it is do 45-1 hour a day and take a rest day on the weekends.
2. Eat healthy and keep your calorie intake around 2000 calories a day for a guy your size. (there are exact ways to calculate this... and if you are doing insanity they give you the formulas for it rather than me explain it all on here)
Eat less crap... go with spinach, chicken, fish, nuts, lean steaks, other fruits and veg, protein bars/shakes....shit im hungry now.
its a simple formula!! be active eat right.