What you do outside of running can be huge for late-race performance. During those portions of a hard workout or race when my energy starts flagging and I begin questioning my life choices, I often ...

An editor did daily core exercises for two weeks. Here, she unpacks the results with the help of fitness experts.

Six-pack abs might look great, but they won't save you from chronic back pain. Discover the "internal corset" muscles that ...

You probably don’t think much about your core when you’re running—until something starts to hurt. Maybe it’s your back after a long run. Maybe your hips ache every time you increase your mileage. Or ...

Weak core muscles have been linked to posture problems and back pain (Photo: iStock) A lean body in good shape and health is what many desire; and a flat tummy of course. Core muscles help you to ...

A 35-year training veteran reveals how long your bridge hold should last after 60 to rank above 90% of peers. Take the test ...

Pregnancy does some pretty incredible things to your body, but for many women, it can also leave you feeling a little unfamiliar in your own skin afterward. One of the most common changes is diastasis ...

All products featured on Self are independently selected by Self editors. However, when you buy something through our retail links, Condé Nast may earn an affiliate commission. Prostock-Studio/Getty ...

Back pain affects millions of people daily, often stemming from weak core muscles that fail to provide adequate spinal support. The interconnected muscle groups surrounding the torso work together to ...