8 hours
Breathing, eating, sleeping, going to school. Just normal things other human beings do.
A normal human being with working ears and eyes.
no
Yes ... ... ...
Yes. The older you get, the less sleep you need. By the time a human is 15, they should be sleeping 7-10 hours, more if they still are in college.
The Tsetse fly is a vector for Trypanosomatid (trypanosomosis - human sleeping sickness) .
On the Up - 2007 Human Sleeping Bag 5-6 was released on: USA: 25 January 2009
sleeping
Between 640 and 850 muscles in a normal human's body.
Most will be awake, eating, working, preparing meals and doing the normal things human beings do and will usually join in collective worship about once a week.
37 is normal.
The human body is always working from when you wake up in the morning to going to sleep at night.