Bones of the human body support us and allow movement. Exercise increases bone strength by bringing them more nutrients, hauling away waste, and inducing specialized cells to make more bone (osteoblasts).
Osteoblasts add specific proteins, fatty acids, vitamins, complex carbohydrates, and minerals to bone to strengthen them. They also rebuild and repair bones, especially when they have the right nutrients in the correct ratios.
Newborn babies emerge with 270 bones. Some of these bones —such as the skull bones— fuse during childhood.
Adults have 206 bones and 230 joints, as shown in the classic skeleton picture.
Our skeleton provides structure —so we can stand upright—and flexibility so we can move easily.
Some bones of the human body—like the upper leg bone (femur) and the upper arm bone (humerus)— are very long compared to their width. Others like the ankle bones (metatarsals) and wrist bones (metacarpals) are much smaller, have similar widths and lengths, and fit together like puzzle pieces.
The 28 bones in each hand have at least 30 joints. Each foot also has 28 bones and at least 30 joints.
Three (3) specific cell types help maintain strong bones in the human body:
Without exercise and gravity, bones lose minerals and strength.
An easy way to view the health of your bones is to look at your teeth.
Are they straight? Are they white and full?
Or are they shrinking as you age?