"John E. Carty" wrote in message
.. .
The trip back up is where you need to go slowly or risk the bends.
Won't happen in a free dive. This is a result of taking a breath from some
depth (as little as 4 feet down) and then not exhaling when returning to
the
surface

The "bends" result solely from too rapid an ascent, whereas holding your
breath is a problem no matter how slowly you ascend. The two are both
dangerous, but are not the same thing.

Otherwise, your point is accurate as far as I know.

Pete