Young Hispanic female intensely pedals a stationary bike in a gym. She wears a blue sports bra and white pants, surrounded by gym equipment, under warm gym lighting. When Herman Pontzer began studying ...

Loose skin can occur during weight loss, especially rapid weight loss, due to changes in skin structure from obesity. You do not have to be obese to experience loose skin. For example, you can have ...

Exercise bikes and treadmills are great choices for getting a cardio workout. They can help you burn calories. They're popular because it's easy to get moving on them, either at a gym or at home. But ...