#6: The Healing Vibrations of a Cat’s Purr
A cat’s purr operates at frequencies between about 25 and 150 hertz, a range known to promote tissue healing and bone growth. These vibrations may help cats recover from injuries more efficiently and maintain bone density despite long periods of rest. Some researchers believe exposure to similar frequencies could have therapeutic uses in humans. What sounds like contentment may also be a built-in repair mechanism.

