According to recent research results, a solid 10-minute power nap tends to significantly boost our mental focus and productivity. One major research study tested four nap time spans: 5, 10, 20 and 30 minute naps. The study included a control group that did not take a nap.
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Why Take a 10-Minute Power Nap?
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from promo - fitness http://ift.tt/1mwjOD9
Why Take a 10-Minute Power Nap?
via promo103
