Pineal gland

This brain structure helps with learning new things and memory. It naturally shrinks as people get older. However, in long-term meditators, the opposite happens! People with 10,000 hours of meditation have brains that are younger than people of the same age.

Beings who are 50 years old and have meditated 10,000 hours, have brains that look like 25 year olds according to MRI scans!