Dr. Fabio Bonsanto on the tennis players' woes at the 2026 Australian Open: "Bodies pushed to the limit, Djokovic is right to say that there's too much going on." On the stifling heat in Melbourne: "A ...

You're relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it's a muscle in your arm, your leg, or ...

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, ...

Muscle fatigue is a decreased ability to create force with your muscles. Electrolyte imbalance and overuse are some of the most common causes of muscle fatigue. Rest and massage are the best ways to ...

Objective Stress urinary incontinence (SUI) is common among females during functional fitness training, such as CrossFit. The aim of this study was to assess the effect of pelvic floor muscle training ...

Dr. Valerie Cholet is a Professor of Kinesiology. She earned her doctorate at Penn State University and has taught in higher education for over 20 years. Her areas of specialization include Exercise ...

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 ...

Hypertrophic cardiomyopathy (HCM) thickens the left ventricle in your heart, which can make pumping blood harder and raise the risk of complications if untreated. HCM symptoms can be mild or absent ...

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 ...