Are you looking for an easy, fast effective way to exercise? In recent years researchers have found that great benefit can be obtained from short physical workouts. Even as little as 10 minutes of exercise a day can produce results. And for boosting metabolism and benefiting the heart, some research has shown that brief period of intense exercise interspersed with a period of rest can more effective than a longer, slower workout.
Selected source: “10 – minute workouts” http://www.FitnessMagazine.com/workout/express/10-minute // “Ask Well 3 Short Workouts or 1 Long One?” by Gretchen Reynolds, 7/5/13 .