Do muscular divers use their air faster?

Answer 1

This depends on the use of muscles, not just their existence. Some people have a higher metabolic rate than others and this would lead to their air being used quicker as their heart requires a higher rate of oxygen and therefore the lungs have to provide more and so work more often. A muscular diver may use his air more quickly if he is more active. Remember that the air is extracted when you breath, so it's that rate which counts. I would like to add another fator which affects the rate of air used. When there is pressure around the front of your face, the nervous system is built so that you breath quicker, and you are more aware of your breathing than normal. So the water pressure around the face when diving does affect your breathing. Very experienced divers that have had lots of dives will be more used to this, they adapt to it, and therefore use much less air than a first time diver.