This workout mixes fast interval cardio via the bike, elliptical glider or running. (This isn't easy to do on a treadmill.) Start Five minutes Tabata, five minutes lift. Take five minutes to do the ...

Lack of time is often the main reason people don't exercise regularly. But a type of interval workout recently popularized by ...

The American Heart Association recommends that adults get "at least 150 minutes per week of moderate-intensity aerobic activity or 75 minutes per week of vigorous aerobic activity" — or a combination ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

Walking? Lifting weights? Does it matter what zone you’re in? I have answers.