The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
Did you know?
Everyone has one nostril that is larger than the other.
Walking and running in a tetrapod.
Hare running in open field
Running
Ripple marks (running water)
Running is a great way to improve cardiorespiratory endurance