Sleep length consistency

Taken together, these findings suggest that while a nap on the order of 5 min may produce some benefit, consistent benefits are achieved by a nap of 10 min duration. This conclusion is supported by Bonnet (47), who investigated the effects of sleep continuity and the recuperative benefits of different-length sleep periods and concluded that continuous sleep periods longer than 10 min are required for sleep to have recuperative value. 

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