Notice that the preceding "exercise" description was void of aerobics. It was rather, a brief but highly intense anaerobic workout. Therein lies the secret, you do not have to do aerobic exercise to have a lean strong body and a strong stress-proof heart.

Good news: You can greatly increase your metabolism and lose weight by exercising in short intervals at a high intensity where the demand for oxygen is much higher than can be supplied. This type of exercising (Burst Training) creates a debt of oxygen in just one minute. As you resume normal activities, your body will repay that debt of oxygen. This repayment of debt means that your body burns extra calories throughout the day without any additional workout time.

Few people understand that when Nautilus exercise machines where invented (early 1970s) the "big idea" was more than the unique cam shaft allowing for a more consistent and smooth motion with variable resistance. A big part of the big idea was the program.

The program consisted of how all of the different machines were used in sequence and without rest in between sets. It was called circuit training.
The university I was attending on a football scholarship purchased all of the Nautilus machines, and actually built a separate room so that each machine could be strategically placed and used exactly as prescribed.