Jessica Johnson's arms swelled after she tried the rigorous 'Murph Challenge', a popular CrossFit workout. Swollen limbs can be a symptom of a rare, but potentially lethal, condition known as ...

Discover how a 30-day training program can transform your arms, strengthening biceps, triceps, and forearms while boosting your muscle endurance and overall health.

Peloton trainer and author Tunde Oyeneyin's arm challenge includes high reps and light weights. Here's what happened when I committed to a month of arm work.

South Carolina's Jessica Johnson had to be hospitalized after her arms "exploded" while she was doing pull-ups for a high-intensity Crossfit routine.

This superset workout focuses on the eccentric (lengthening or lowering) portion of your workout to give your biceps and triceps a challenge.

A South Carolina gym enthusiast says her arms “exploded” after she attempted to do a vigorous fitness challenge — which she says caused a life-threatening condition. Jessica Johnson, 25, had ...