Do this breathing technique for 15 minutes before you ride the bike and come back with your feedback, after doing it for 7 days.
Build up your timing gradually.If you feel tired or dizzy, stop and resume after one minute.
Anulom Vilom –
Close your right nostril with thumb and deep breath-in through left nostril
then – close left nostril with two middle fingers and breath-out through right nostril
then -keeping the left nostril closed deep breath-in through right nostril
then - close your right nostril with thumb and breath-out through left nostril.
This is one cycle of anulom vilom.
Repeat this cycle for 15 to 30 minutes twice a day.
Children under 15 years – do 5 to 10 minutes twice a day.
You can do this before breakfast/lunch/dinner or before bedtime or in bed. Remember to take deep long breaths into the lungs.You can do this while sitting on floor or chair or lying in bed.
While doing anulom vilom, keep your eyes closed, concentrate on the third eye (point in between the eyebrows).
You very likely have exercise induced asthma...your physician can help you diagnose and treat this easily. The normal simple lung function tests are typical in exercise induced asthma..the definitive test is called a Methacholine challenge test...alternatively, many pulmonary function labs can exercise you on a stationary cycle or treadmill and then repeat simple pulmonary funtions which are usually diagnostic