I believe you said that doing underwater 25 is “only 3 seconds more” of breath holding. That makes no sense to me considering for most part ppl do bi lateral or when they come off the wall w flip turn it’s no where close to that: amount of time.

So doing a full 25 is much further and I can do much safer breath control work than having to go a whole 25. Thus if we are doing a full 25 underwater and a persons feels the need to truly breath....please fucking come up and breath over holding your breath. So if they normally breath every 3s and suddenly hold their breath for 6sand aren’t at 25m yet and get flustered and want air.....it’s irrelevant if they came up early or not. They already accomplished the goal of comfort, breath control and not panicking. Thus why I say breath at end of day vs olding your breath for only 3s more. They already held their breath for longer than normal etc so this arbitrary full 25m of no breath is a stupid and my opinion can be a dangerous metric. So it’s not just “3s more” they prob already have doubled their time w/o air if they are doing breath control work. So suggesting 10 x 25m of no breath at the end of a set is a lot of work at no air when already likely fatigued. Thus in my professional opinion if they need to breath at 18’m, breath over “holding your breath longer”.

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Brooks Doughtie, M.S.
Exercise Physiology
-USAT Level II