All this does make sense, relaxed state and light efforts when positive buoyancy is reached.
So it's then all about making sure you have enough O² available for the ascent : not too fast so you don't waiste it on finning efforts, not too slow so you don't run out of it before surfacing.
Life is so simple sometimes ;-)
So it's then all about making sure you have enough O² available for the ascent : not too fast so you don't waiste it on finning efforts, not too slow so you don't run out of it before surfacing.
Life is so simple sometimes ;-)