Even if you have no time for fitness, I'm certain you can find at least 16 minutes for this quick, four-exercise circuit. It is a high-intensity interval training (HIIT) circuit, aimed at getting your heart rate up! HIIT boosts endorphins and builds lean muscle. This style of training is a combination of fast bursts of exercise with rest periods. The rest sessions allow the body to maintain the muscle while the short intense bursts shred fat. Give it a try with this quick routine!
Perform each exercise for one minute. Complete as many repetitions as possible. After you finish the entire routine, rest for 30 seconds to a minute. When you feel completely recovered, repeat the series three more times.