Back in September I was diagnosed with bronchial asthma. I'm ok when training between 9.30 min miles but if go any faster I can't breath. I have slow down take inhaler. Today was at 8km in 10k race. I never got it under control till 15 min after finishing the race. So slow finish. Got half next month and want tips at how run fast and not kill myself. Its pain in my chest more uncomfortable than wheeze and cough.