Yoga is a Hindu spiritual and ascetic discipline, a part of which, including breath control, simple meditation, and the adoption of specific bodily postures is widely practiced for health and relaxation.
Yoga is a group of physical, mental, and spiritual practices or disciplines which originated in ancient India.
The key feature is the relaxation you feel.
There are multiple sites out on the internet to describe the benefits of yoga.
The following is from https://www.yogajournal.com/lifestyle/count-yoga-38-ways-yoga-keeps-fit.
Here are some of the key Health Improves from the article:
1) Improves flexibility. You might not be able to touch the your toes in the first few sessions, but as time goes on, you will.
2) Builds muscle strength. Helps protects us from arthritis and back pain.
3) Posture. This helps with back, neck, and other muscle and joint problems.
4) Betters your bone health. It is well documented that weight-bearing exercise strengthens bones and helps ward off osteoporosis
6) Drops your blood pressure!
7) Makes you Happier! Relieves depression.
8) Helps you focus. An important component of yoga is focusing on the present. Studies have found that regular yoga practice improves coordination, reaction time, memory, and even IQ scores
9) Helps you sleep deeper.
10) Increases your self-esteem. Yoga invites you in on self-examination and betterment. You will experience feelings of gratitude, empathy, and forgiveness, as well as a sense that you are part of something bigger.