Gardening keeps you healthy for a variety of reasons

First of all, physical work, exercise in the fresh air promotes physical health.

The less stressful activity promotes mental health.

The self-produced vegetables and fruits are "controlled cultivation". The gardener himself determines what is used on insecticides and fertilizer,

What you grow yourself, you do not need to buy. The result is a reduced need for "chemically pushed plants". That's good for our environment.