What is the Bends?

The bends is a term used for decompression sickness and is associated with scuba divers. The pressurized air tanks used for breathing under water by scuba divers contain nitrogen gas. It does not cause harm to diver while they are deep under water. However, the bends can affect divers when they resurface or ascend too quickly and do not release the excess nitrogen gas bubbles from their bloodstream. Look here for more information: