holding breath too long bad for you?

Absolutely make him learn about SWB (shallow water blackout) - everyone who dives needs to know exactly what it is and how it occurs.

As for practicing holding his breath, I encourage whatever exercises he wants to pursue outside of the water, and I think it's excellent discipline that can expand his horizons beyond diving or even other physical activity.  It's a zen activity in my mind.

Back in my glory days on the soccer field I'd hold my breath while running behind someone trying to mark me so they wouldn't hear me.  No skid marks on my face...  

Keep feeding him info and encouragement, Eug, he's gonna be an animal.  

Check this out....http://jap.physiology.org/cgi/search?sortspec=relevance&author1=Andersson&fulltext=divers&pubdate_year=2009&volume=&firstpage=

Check this out....http://jap.physiology.org/cgi/search?sortspec=relevance&author1=Andersson&fulltext=divers&pubdate_year=2009&volume=&firstpage=

that is some serious reading...

If I got it right, it seems to say that there MIGHT be a chance of long term prolonged damage.  Then again the amount of waves cooking their brains while studying the effects might be the cause!

Absolutely make him learn about SWB (shallow water blackout) - everyone who dives needs to know exactly what it is and how it occurs.

first things we covered Ab

Hey are there any freediving classes local?( and on weekends?)

Walins used to offer classes but I haven't been in there for a while. Give them a call.

Aqua Safari in Santa Cruz has the class once in a while.  David (?) Laird teaches the one day class.

Is it bad for you to hold in your breath for too long?

Good question. Let me answer with yet another question:
Is it bad for you to hold in a fart for too long?

Thanks for the class info gana look em up

Hey sin coast its not bad to hold yer fart, as long as you save and time it corectly. lol