Despite the fact that freediving is considered to be a very safe sport, there are risks involved. These risks include the possibility of a lung squeeze. This condition can lead to arterial gas emboli, pneumomediastinum, and pneumothorax. The severity of the situation depends on a number of factors. The mental condition of the freediver and the depth of the freedive are both important factors.
Nitrogen narcosis is a condition caused by the partial pressure of nitrogen in the body. It impairs the brain’s cognitive functions and can be extremely dangerous, even at shallow depths. At depths as shallow as 30 meters, nitrogen narcosis can occur.
Blackout is another potential hazard of freediving. This occurs when the partial pressure of oxygen in the blood is below the level required to maintain consciousness. This blackout is most common in shallow waters.
Freedivers have the ability to maintain their consciousness for up to three minutes without oxygen. However, the longer they go without oxygen, the more serious the damage. A lack of oxygen can lead to irreversible brain damage.
While most freedivers agree that freediving can be dangerous, the severity of these risks depends on the freediver and the safety precautions used. Most injuries can be avoided by following the proper safety protocols.
For example, when you are diving, it is a good idea to divers with a mask to equalize pressure in your ears. This can help you keep your lungs from becoming overly swollen.