For a program to be most effective, Washington recommends sticking to it for at least four to five weeks before changing it up. This way, you can practice the movements through consistent habits, ...

Plus, exactly how to train to sculpt your muscles.

If you have ever lifted a weight, you know the routine: challenge the muscle, give it rest, feed it and repeat. Over time, it ...

Childbirth depends not just on hormones, but on the uterus’s ability to sense physical force. Scientists found that pressure ...

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 ...

Rowing machine benefits spread far and wide, including its unique ability to target 85% of your body's muscles. Basically the ...

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 ...

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 ...

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 ...

Many facts of everyday life contribute to chronic stress; some, such as money and parenting, are nearly universal sources. The first step toward getting chronic stress under control is to learn your ...