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There's a right—and wrong—way to follow one.

Q: How many calories a day do I need to take in to gain mass and still not gain excess weight? I’m 16 and weigh 180 pounds. I train four or five days a week and have been gaining well over the past ...

A calorie surplus is a bit like a well-mixed negroni; finding the sweet spot is key. Whether you’re looking to build muscle or have been advised to gain weight, knowing how to calculate the right ...

It’s no secret that if we burn more calories than we take in, we’ll lose weight. It boils down to simple mathematics. There are a lot of calorie-counting apps and calculators that will tell you how ...