10.

1. Healthy lifestyle is the good manner of your living, you know what is helpful for your health and continually doing so as well as avoid all bad habits.

2.There are many factors which could affect one's longevity: age, gender, habits,... The most important factor maybe relate to the habits and traits because however healthy you was borned with,if you don't keep a good livings, you maybe affected by many diseases, viruses,etc

3. 4 principles to stay healthy: regular exercise, work, rest, and positive thinking.

4. Watching movies, reading comic books are two of many good ways to relieve stress. i often play badminton or go to gym club.

5. I think it helps people to keep their positive thinkings.

6. The advanced technology could provide people with some facilities which could prevent people from contracting some diseases which are caused by weak respiratory system.