I've confused myself

I know that eating a low calorie diet will help me lose the weight, but i'm confused as to how i guess.

You have to burn 3500kcal to burn a pound. Supposedly i'm allowed to have 2000kcal a day. Today i ate 1,392 kcal and burned 775kcal through excercise.

SO does that give me a deficit of 167, and do i have to lower calories or up exercise to lose the weight? because 167 is no where near 3500kcal... :S

If you are burning 2000 calories a day just being alive... and you only ate 1392 calories then you have a deficit of 608 calories. Plus you exercised and burned another 775 calories. Which means you have a deficit for today of 1383.

It is advised that you keep your deficit to about 500 - 1000 calories per day. This will give you a weight loss of 1 - 2 lbs per week. Which is what is advised for healthy weight loss.

Your math got mixed up somewhere.  Here's how it should have gone:

• Total burn = 2000 + 775 = 2775 (base burn + exercise; it's better to let CC add this up for you since, as written, we're double counting the calories you would have burned anyway even if you weren't exercising; the real number's probably more like 2600)
• Total intake = 1392
• Deficit = Total burn - Total intake = 2775 - 1392 = 1383 calories

And I see that you are a teen, so in no case should you be eating less than 1500 calories per day.

Could someone please post the teen calculator site? I don't have time to look it up, but the tools on CC are geared for adults, not teens.

about.com lists 14-18 sendentary female as requiring 1800 calories a day.

http://pediatrics.about.com/library/bl_calori e_calc.htm?start=1&gender=undefined&a ge=NaN&activity_level=NaN&gender=Fema le&page=2