Failed 25m underwater swim.

[lehele]

Surfaced because extreme urge to breath, CO2 build up. Recommendation?

 

[FF / EMT]

Hold Your breath longer.

 

[johndiver999]

Practice - with someone watching you. Also you can practice just general swimming and also breath holding while walking should acclimate you to the stress.

 

[rx7diver]

Discuss with your instructor. Helping students with this kind of thing is one of the things good instructors do.

My open water instructor was also a swimming for conditioning instructor. We were made to do a lot of surface swimming and physical fitness (e.g., running on a track) before we ever attempted anything requiring us to hold our breath for longer than briefly.

I think this kind of physical conditioning made the subsequent longer duration underwater breath-holding skills much, much easier.

rx7diver

 

[davecampbell]

Hold Your breath longer.

or swim faster...

 

[lowviz]

Scientific American: "The Limits of Breath Holding"

I'm not a free diver except in the most rudimentary and trivial sense, but I find it fascinating in several dimensions, and I've followed a number of threads about it here on SB. There's an article in the April 2012 (current) issue of Scientific American The Limits of Breath Holding by Michael...

scubaboard.com

You may find this to be of interest...

 

[BlueTrin]

Out of curiosity how long does it take for one to do 25m underwater on average?

 

[grassgreen]

What course is this a requirement for ?

 

[lowwall]

or swim faster...

Or slower. Pull all the way through and milk the glide.

 

[Alekseolsen]

So, I had some similiarites a while ago. Struggle with breathold with mask off in 4°C water. Anyway, 10 minutes training a day for a month training with a "freediving brethold trainer" app had me comfortably increase my breath hold from ~70 seconds to 2 and a half minute (both on dry land.

Might be easier to train breathhold than having pool access etc.