How many caloried would I need to lose about 2lbs a week? I am 17 years old and wieght about 150 lbs, i am 5'5 ish maybe a lil shorter by like 1/4 and inch. I am pretty active, I have horses so I clean the barn everyday I also go to the gym 4-5 days a week and do a good 45-55 min of cardio and really getting moving to a point I am sweating alot, either I run or user the glider machine. I do weight training 2-3 times a week as well. i am a medium built girl and alos a vegitarian. How many calories with all this information do you think I would need to lose 2lbs a week? Thanks