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Surprising study: One minute of exercise at 90% of your max heart rate followed by one minute of rest ten times (twenty minutes total) had significant health benefits. This is true even if done once or twice a week, you aren't fit, and are a cardiac patient!

Also people seemed to like the more intense shorter workout better than a longer more moderate one. Seems like it is worth a shot! What have you found the best way to stay fit in the minimum time?
Short, intense bursts of exercise, followed by brief periods of rest, produced significant benefits for the heart and overall health.
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