power lungs

[Nalu]

do these and other similar products help your breath hold (bottom time)?
has anyone tried it, or is it just a gimmick?

thanks.

[Huan]

I bought a similar product off ebay much cheaper.
The technique works, I believe that the cuban freediving team were the originators.
They used to use a pen shaft and breathe through it.
It is a good way to build up the inspirational muscles.
IMO powerlung is too expensive for what it is.
http://cgi.ebay.co.uk/ws/eBayISAPI.d...152966162&rd=1