Breathing Exercises in Asthma Targeting Dysfunctional Breathing

"Key points in the intervention are~* Reduction (or normalising) of the respiration rate; use of rhythmic, nasal inspiration, diaphragmatic breathing; reduction of depth of breath, longer expiration; breath-holding at functional residual capacity.~* Relaxation, especially the neck, jaw, tongue, and shoulders. Emphasizing the impact of gravity to the body.~* Inclusion of the breathing modification into walking and other physical activities.~* Daily home exercise of BrEX."

Participants will receive only short information given initially at recruitment. No instruction or booklet will be distributed in the Usual care-Group.