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Thread Status: Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.


New Member
May 17, 2002
got another question

This has been bugging me for some time...

When I come up from a 'deep' dive (+25m) I sometimes get a headrush after the first breath...A bit like a hit of laughing-gas or something...it lasts for a few seconds and is not unpleasant :)

I think I can guess what causes it, but is it a signal I'm really close to the SWB or is it not that bad?

tnx for any info