If you want to build muscle and boost metabolism (and melt pounds away even faster), you might want to consider interval training.
What is interval training, you ask? Interval training is exercise that alternates periods of intense activity with periods of slow, easy activity. Think of running for 30 seconds and then walking for 30 seconds to get the idea.
The advantage of interval training is that, over time, it improves the efficiency of the cardiovascular system. It also minimizes the injuries associated with repetitive exercises. Some athletes use interval training as part of a cross-training regimen.
Best of all, the American College of Sports Medicine reports that “more calories are burned in short, high-intensity exercise” than during low-intensity exercises. Interval training can be a timesaver for busy people.