la anatomia de la clasica vida da respuesta te varios imnutes deportistas de la sociedad
Try getting them to breathe into there belly rather than there chest and try to get them to hold there breath for 10 to 15 seconds at a time or try to get them too breath in there cupped
hands or a paper bag
Answer: the contraction and relaxation of the muscles in the gut and the airways
Explanation: I hope this answers your question
B:illegal drugs (I believe)