Science has proven that exercising for at least 30 minutes daily is good for the bones, muscles and for the brain. It has been proven in experiments that happy hormones are released within the brain and the nervous system. 

Here are some of the basic exercises that you can do:

1. One hour of walking per day

2. 20 minutes of biking

3. 30 minutes calisthenics or,

4. Tai chi chuan Postures and exercises which you can download from Youtube and do it for 30 minutes daily.

So be healthy- mentally and physically!