
Fitness & Health
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Published 09:40 16 Mar 2016 GMT

It will also tell you what time to get up at if you go to bed right now, depending on whether it’s a nap or a deep slumber you’re after.
Some will rail against such a scientific approach to sleep - most people obviously prefer just to sleep when they feel tired.
But if you find that you're not yourself due to your sleeping habits, surely it's worth a shot, right?‘Perfect’ hot tub gets big reduction on Amazon in rare discount
Fitness & Health