FEED YOUR BODY!!!!!!!!!!!!!!

I know this sounds completely contradictory to what you have told yourself, but in order to lose weight and get fit you HAVE to eat!! Your body was meant to maintain a healthy weight all by itself!!! You just have to send it the right signals!!

Some people drastically cut back in calories and think they're going to successfully lose weight and keep it off! This is the FARTHEST THING FROM THE TRUTH!! The weight you do end up losing is going to be primarily muscle because you are sending a signal to your body that you are starving yourself, therefore, it will hold on to as much fat as it can to protect itself. Your body starts shutting itself down (your metabolism slows to save energy) and you will not have enough energy to get through your day. Your body will not be able to properly perform its most basic daily functions. And then once you get "skinny" and start eating again your body will store what you're consuming as oppose to use it which is why you gain the weight back, often along with a couple extra pounds. This cycle is destructive!!

A person who is physically active should ALWAYS consume AT LEAST 1200 calories (men, you may want to add 200-300 extra calories), ideally in 2-3 hours increments. Unfortunately men get to eat more food than us women because their bodies contain much higher levels of testosterone and their metabolisms are generally higher. Here is a formula you can use to get a good idea of what you should be eating based on your personal stats:

In order to lose a pound a week you need to have a calorie deficit of 3500. That's a 500/day deficit by either eating 500 less calories, or burning 500 calories through exercise.

Calculate your resting metabolic rate (RMR): your body weight x 10= RMR
Calculate your daily activity burn (DAB): RMR x 20%=DAB
Calculate your daily caloric rate (DCR): DAB + RMR=DCR
Subtract 500 Calories a day: DCR-500=Total calories you should be eating per day to lose 1 lb./week

So here's an example for a 150 lb. person:
150 x 10=1500
1500 x .20=300
1500 + 300=1800
1800 - 500 = 1300 calories a day

But keep in mind that's only a starting point! As you start becoming more fit you will need to eat more food in order to supply your body with enough fuel to make progress and give yourself energy! For example...when I first started eating to get fit I ate 1200 calories but now I eat approximately 1800-2000 calories a day! And I eat every 2-3 hours to keep my body's metabolism up! The more fit you are, the less your body will store calories as fat!!! You will be sending your body the signal that it needs to use those calories!
EAT UP!