Sign up for CNN’s Fitness, But Better newsletter series. Our seven-part guide will help you ease into a healthy routine, backed by experts. Some Olympic fans ...

Join us as we dive into an incredible stretching session with Goldman and the exceptionally flexible Liberty Barros. Watch in ...

Vaccines could one day be administered topically, with no needles required, by stretching the skin beforehand. Our skin is an essential barrier against pathogens, and is also tied to our immune system ...