Asthma is due to hyperresponsiveness of your airways for various stimulus like dust,pollen,cold weather,food allergens etc.
Next Steps
There is no complete cure for Asthma.once u get it u can only keep it under control through avoiding the allergens(mentioned above) and also breathing exercises, aerobic activities do help.Pranayama is onr form of breathing exercise that u can practice daily.Aerobic activities like swimming, jogging, cycling will increase ut lung capacity n help to get relief.According to ur height u have to maintain weight at around 70 kgs because being overweight is also a risk factor for asthma. Aerocort rotacaps r a good option to get relief of symptoms n prevention without major adverse effects bcos they r not taken directly into blood.