Hi. I am 18 years old, 6'5" and i weigh 280. I need to get my weight down to about 225 real soon. Like 4 months. Lately i have been doing AM/PMs running a mile, pull ups, push ups, sit ups. Is there anything else i can do to lose weight and decrease my run time. I am enlisting at the end of this semester, and will probably be heading to Basic sometime mid summer. Please help, i am very motivated, and ready to work hard to get it off.