How can I get a quick but effective cardio workout?

Even if we know cardiovascular exercise does wonders for our heart health, finding the time to devote an hour to a treadmill session or a run seems like a lot. Well, how about 20 minutes from warm-up to cool-down with only four minutes of intense exercise?

Peak 8 is a type of high-intensity interval training which involves a series of eight, 30-second sprinting intervals with 90-second active “rests” in between. You may use a stationary bike, treadmill, elliptical machine — or even any flat surface such as a track (road, backyard, etc.) that can be measured about 70 yards in distance.


Check out these resources for more information about this kind of cardio workout:



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