Background Few interventions reduce patellar tendinopathy (PT) pain in the short term. Eccentric exercises are painful and have limited effectiveness during the competitive season. Isometric and ...

Muscular endurance is a muscle’s ability to contract against a load repeatedly over time, supporting athletic performance and everyday tasks like climbing stairs. Research links higher muscular ...

If you've spent any time lifting weights, you've probably noticed your muscles looking noticeably bigger during or right after a workout. It's a satisfying reminder that you actually did something, ...

1 Children's Health and Exercise Research Centre, University of Exeter, Exeter, Devon, UK 2 Centre for Heart, Lung and Vascular Health, School of Health and Exercise Sciences, University of British ...

Oluseun Olufade, MD, is an Orthopedic Surgeon and Assistant Professor of Orthopedics at the Emory School of Medicine. Rest and changes in activity can help treat back spasms that cause lower back pain ...

There are only a few things in life more humbling than leg day—but adding a lower-body session into your workout split is a surefire way to build strength and confidence, move better, and crush ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. January 12, 2026 Add ...

Every living creature needs water to survive. And sweating, peeing, vomiting, and diarrhea all militate against optimal fluid levels, says MedlinePlus, even to the point of threatening survival. The ...