A University of Nebraska study found that 30-second-long intervals were better for building endurance and aerobic capacity than intervals lasting three minutes.
Treadmills force you to exercise at a specific pace, while you can slow down when you get tired on a track.
For years fitness enthusiasts have believed walking and running burned the same number of calories per mile. This old school thinking says no matter what speed we move, we’re expending around 100 calories per mile when moving over level ground.
High-fat diets can lead to coronary artery disease, heart attack and stroke. Did you know that eating just one high-fat meal impairs the blood vessels? After the meal, fats flood the bloodstream and trigger an inflammatory reaction in the cells lining the blood vessels.
Metabolic rate increases 12 to 25 times above rest during exercise, so fat use increases tremendously. South African scientists showed that fat use was greater during running than cycling.
Compared to moderate-intensity aerobics, HIIT causes greater improvements in maximal oxygen consumption, blood vessel health, blood pressure, heart function, blood sugar regulation, and neuromuscular control.
Scientists combined the results of many studies using a statistical technique called meta-analysis and ended up with a sample size of more than 2,000 people. Most studies found that aerobic exercise decreased abdominal fat, while weight training had no effect.
Looking for a cardio workout that will whip your whole body into hardcore shape? The rowing machine may be a better choice than the treadmill or elliptical.
Young overweight men practicing HIIE lost nearly five pounds and increased aerobic capacity by 15 percent.
Conventional wisdom is that prolonged, low-intensity exercise promotes fat loss best. However, well-controlled studies from Canada in middle-aged women showed that weight loss was greatest at higher exercise intensities.
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