This kind of exercise includes things like lifting weights, or doing sit-ups and push-ups.
VOA: special.2010.06.08
But for many men, the most difficult part of P90X isn't its heavy emphasis on pull-ups and push-ups, but rather its relentless call for stretching and warming up.
When she bares her arms for a gym class with schoolchildren, she makes headlines on the politics page and the style section, inspiring Americans to hit the floor for push-ups and reconsider sheaths under cardigans.