Plus: Diving after a root canal and a cold and flu quiz.

Our dive experts help answer your questions on a variety of topics related to healthy diving.

How to keep your local chiropractor off your back.

When diving a wreck, should you go inside? Not without proper training.

Should you breathe air, nitrox or trimix? It depends on the dive. See how nitrox and trimix stack up against the stuff you're used to inhaling.

It may be your ticket to underwater freedom.

Our technical editor confronts myths about rebreathers and argues that semi-closed systems make sense for recreational divers.

Does your tank have enough air for your next dive? Find out.

Wreck diving skills Houdini would love.