Avoid too cold or too sour foods!
Use masks while working in dusty places or smoky places!
Smoking causes cancer, and you die soon! But, smoking also causes breathing difficulties so that you suffer, but don't die soon! QUIT SMOKING!
Breathe fresh air in early morning before sunrise preferably! Yoga training and Meditation helps!
Avoid tight clothes while working and especially while sleeping! They reduces your breathing efforts!
Regular gym and upper chest, back, shoulder exercises makes your breathing apparatus stronger and healthier!
Plant more trees for more oxygen and less pollution! Try to spend some time in nature, rather than only indoors!