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Anonymous
>>423533 They "count". The thing is, exercise doesn't just burn calories while you're doing it. It elevates your metabolism for quite a while afterwards, as does eating every three or four hours. You can't simply add together how many calories you used in a day, since that depends on lots of factors. What you do is get a pretty good estimate of what you need to maintain your weight based on your level of physical activity. Then you base your diet on that number, eating a few hundred less if you want to lose, or a few more if you want to gain. Or exactly that if you're happy where you are. This is all approximate, but it ensures that you're in the ballpark, which, with exercise, is as close as you need to be to any perfect number.
http://www.bmi-calculator.net/bmr-calculator/harris-benedict-equation/
And 1800 calories is approximate too. If a man were 5'4" and 120 lbs. he probably wouldn't need 1800 calories to maintain that. The number is, however, applicable to the majority of people.
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