Every time you brace your abs to lift a grocery bag, hold a plank, or even laugh hard enough to double over, a pressure wave ...

New brain driver: Penn State scientists discovered that abdominal contractions trigger measurable brain movement via a hydraulic-like pulse. Advanced imaging: High-speed microscopy and microCT in mice ...

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.

Electrical muscle stimulation involves sending electrical impulses through the skin. This stimulation may provide benefits, such as helping to repair tissue and strengthen muscles. The electrical ...