Does nitrogen narcosis effect free divers? Not abig deal probably to most, but just curious about the no limits people who make drops to 400'. Shouldn't the resisdual nitrogen in the lungs enter the blood stream and cause these effect, or do you need higher levels of N2 entering the body to cause thie effect? I do know that freedivers can get bend after hours of diving and being subject to dive tables at depth but does narcosis work in the same manor?