|
|
There are more nerve cells in one human brain than there are stars in the Milky Way.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.
Your heart beats over 36 million times a year.
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
![Stretch anterior tissues by pressing down on shoulders. Stand at the head of the table. Place the ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_5_30_10_33208281.jpeg)
![Facing the table, place one hand on the thigh and the other on the lower leg. Gently rock the leg ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_5_40_30_332311882.jpeg)