Most people think of weight loss as a math problem: calories in versus calories out. In reality, your body sees it as a survival threat. When calorie intake falls or body fat decreases, biological ...

You won’t find dumbbells or weight machines in the gym Sean Keogh runs. At Calisthenics Club Houston, it’s all about training with body weight. “That’s all we do,” Keogh said — but that’s enough to ...