Exercise and not to smoke or be around second hand smoke. But exercise is probably the more important thing you can do to protect your respiratory system.
Answer:
Here are ideas to keep in mind.
Keep Your Neighborhood Clean. If you see trash on the ground, toss it in a trash can.
Recycle Cans, Bottles, and Paper. Save them at home and at school, and help your family recycle them.
Help Keep the Air Clean. Ride your bike or walk to school. ...
Save Paper. ...
Help Save Water.
I hope this helps!
If he does it in moderation
