The answer is turning to crime
Making sure there are no poisonous gasses entering your lungs by covering your mouth and nose
He can progress by Jump-roping, running(same as Jogging almost), swimming and bicycling, Aerobic's and Aerobic Dance, and At-Home exercises.
Conservation is the act of guarding, preserving and protecting. So conserving will help reduce air pollution because instead of letting thing go to the wrong garbage or whatever you can save and conserve and even reuse. decreases air pollution.