We all know that there are different types of sleep that differentiates most people. Among them include that of light and heavy sleepers. What differentiates people on how well they can sleep is perhaps that place where they do sleep.

This is one thing that we can get out of this short video of Mr. Mann. Not the usual flashy stuff but the message is made real clear. Next time we want to sleep, we should take into consideration the external factors and then expect to sleep soundly.

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