Regarding the equipment expand a lung..
Can anyone confirm if this equipment really improve your apnea?
I read somewhere that in some cases it even decreased the time due to a possible decrease in the elasticity of the diaphragm muscle. It would get stronger but in some cases less elastic.
Any other gadgets to recommend for training?
Any good heart rate monitors?
Or any other thing to monitor your progress?
Thank you.
Can anyone confirm if this equipment really improve your apnea?
I read somewhere that in some cases it even decreased the time due to a possible decrease in the elasticity of the diaphragm muscle. It would get stronger but in some cases less elastic.
Any other gadgets to recommend for training?
Any good heart rate monitors?
Or any other thing to monitor your progress?
Thank you.