Brain fog and constant fatigue could be signs of iron deficiency. Learn when to get tested and how treatment can help you feel better.

When injected into mice with retinal disease, the special retinal blood cells integrated into the damaged tissue to ...

England's players are using blood flow restriction shorts to recover faster between matches – and they may also be ...

Some marathon runners and other athletes swear by beetroot juice shots, but is there evidence they really do anything for our ...

After the final sprint, my brain is scrambled. It is a fog that comes with sheer exhaustion, when the only thought is ...

That’s where pulse oximeters come in. These small devices measure your heart rate and SpO₂. They give you another way to understand how your body responds during exercise and recovery. Also, they may ...

VO₂ max may sound like something out of chemistry class, but it's actually an important component of living a long, healthy ...

Wrist pulse oximeters can look similar, making it hard to decide which one to buy. This in-depth guide covers everything you need to know to find your best fit.

She also had a history of hip problems. Twenty years before, she had a hip replacement that stemmed from an injury she ...

Canned oxygen promises to boost your performance at altitude. We asked a medical expert if it lives up to the hype, then put ...

The Azteca Stadium sits at the highest altitude of any World Cup venue in 2026 Hector Vivas/ This article is part of The Athletic’s World Cup performance series, in which Alan McCall draws on more ...

Wearables now flag everything from irregular heartbeats to dips in blood oxygen, but the data is only as useful as a person's ...