Tostriking

Tostriking is a form of free diving that involves swimming to a certain depth and striking the seafloor with the feet or hands before ascending. This technique is used by certain free diving practitioners as a way to equalize pressure in the ears and mask.

The practice of tostriking is based on the principle that the pressure increase due to the descent to the seafloor is more gradual when the feet or hands touch the bottom than when the body is otherwise submerged. By using this technique, free divers can prevent the normal buildup of pressure in the ears and sinuses that can cause discomfort or even injury.

Proponents of tostriking claim that it allows for more efficient equalization of pressure, reducing the risk of suffering from ear or sinus barotrauma during the dive. However, not all free divers practice tostriking, and some may prefer to rely on other methods of equalizing pressure, such as the valsalva maneuver.

There is limited scientific research on the benefits and risks of tostriking, and its use is largely anecdotal. While some experienced free divers promote tostriking as a safe and effective technique, others may not recognize its value or may even consider it unnecessary. Ultimately, the decision whether or not to use tostriking in free diving practice is up to the individual diver.