As much as people enjoy the warm summer months, high temperatures can be hard on the human body. “As mammals, we live close to the thermal edge of life and death,” says Craig Heller, a physiologist ...

While we often focus on the number on the scale, it is really our body fat percentage that tells us just how healthy and fit we are. As a trainer, I have many clients come to me concerned about their ...

Here's exactly how running on different surfaces like sand, pavement, and treadmills can impact your stride (and your health). Runners put a lot of thought into their workouts, considering things like ...

One of the most common measures we all strive to maximize at some point or another is our power-to-weight ratio (PWR). Your PWR is the amount of power that can be produced in relation to your body ...

All products featured on Self are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links. In these dog days, ...

Because of climate change, heatwaves are getting more frequent, more intense and are lasting longer than ever before, with deadly consequences. About 356,000 deaths in 2019 could be linked to extreme ...