New research shows three-minute exercise sessions while relaxing at night can increase sleep times by as much as 30 minutes – challenging common advice about avoiding activity before bed. Exercising before bed has long been discouraged as the body doesn’t have time to wind down before the lights go out. But new research has found breaking up a quiet, sedentary evening of watching television with short bursts of resistance exercise can lead to longer periods of sleep.

Adults spend almost one-third of the 24-hour day sleeping. But the quality and length of sleep can affect long-term health . Sleeping too little or waking often in the night is associated with an increased risk of heart disease and diabetes .

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