Myth: To stay in shape, you only need to work out once or twice a week.

Truth: Once or twice a week won't cut it for sustained health benefits. For your workouts to produce real results, you should be exercising 3-5 times a week, Chris Jordan, the exercise physiologist who came up with the 7-minute workout, told Business Insider.

His insight is bolstered by a new study published in January in the American Heart Association's journal Circulation that found that the best results for heart health were gleaned when participants worked out 4-5 times a week.

[Photo via Reshot]

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