I'm an extremely overweight 18 year old who used to be quite skinny. At this point in my life, I am the heaviest I have ever been at just under 240 lbs. I'm tired constantly, sweat a lot, and have back pains, and quite honestly I'm just tired of looking at myself in the mirror. Ideally, I want to drop at least a 100lbs, and I'm the type of person that if I set out to do something, I want to do it right. As a college student, I will be getting tons of exercise just walking back and forth between all day classes, and I already have to climb 8 flights of stairs just to get to my room (Hurrah for crappy but expensive dorms)
My question is this... I know most websites recommend a calorie deficit of 500 or so, but I consume like 3000 calories a day. Since I consume so many calories, is it alright for me to decrease my calorie intake to 1200 (what normal, less obese people shoot for) or will that shock my body into "starvation mode" and cause it to store more fat?
Also as far as exercise goes, I lug around a 10lb backpack everywhere I go and have to walk everywhere on campus and climb the stairs to my dorm, should this be sufficient exercise or should I be trying to go to the gym? Right now, I think the gym would be very embarrassing at my current weight.
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