In addition to employing nasal breathing and achieving a high BOLT score, it is also very important to warm up properly in order to avoid exercise-induced asthma. The minimum time spent warming up should be 10 minutes. A good warm-up consists of fast walking while practicing a medium to strong breath hold every minute or so. After the 10-minute warm-up, increase the pace so that you’re moving as fast as you can while maintaining nasal breathing.
