Can a short, high-intensity workout replace your longer, more moderate routine?

If you had a choice, would you exercise really hard for one minute or moderately for 45 minutes?

Pressed for time, you probably picked the first option . According to a recent study, the two options — high-intensity interval training (HIIT) and endurance/aerobic training — yield some of the same health and fitness benefits.

As it turns out, it’s a bit of an apples-and-oranges situation. First off, what do we mean by “health and fitness benefits”? Second, is the one-minute, all-out interval appropriate for everyone? And finally, is there an ideal weekly ratio of HIIT-to-endurance training?

To be clear, the study, by researchers at McMaster University in Ontario, looked at sedentary individuals, not athletes with sport-specific goals, and it focused on health indicators such as insulin sensitivity and cardiorespiratory fitness (the body’s ability to supply oxygen-rich blood to muscles and for the muscles to use that blood for movement). It was not about whether you should skip the prep run for your 10K race and do a minute of intervals instead. You shouldn’t! Read the full article>>

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