how do i know how many calories i need a day?
['Step 1: Find your body weight in kilograms (if you live in the US, just divide your weight in pounds by 2.2 to get your weight in kilograms).', 'Step 2: Multiply your weight in kilograms by 0.9 if you are a woman or 1.0 if you are a man.', 'Step 3: Multiply by 24.']