I was told that one of the most dangerous sports is surfing and it takes tremendous amount of strength and conditioning to be a surfer. Deadly wave surfers apparently have trouble a lot of surviving wipeouts. Since their heart rates are high before they go under water, holding the breath even for full minute becomes a huge challenge. One of the most important things athletes need to do is to train in situations that are very similar to the scenarios they need to perform in. This makes athletes feel as they have previously been in this position before which makes them feel a little more comfortable. This can help athletes with not going in to the panic zone. In most sports, not being able to perform under pressure will mostly lead to just losing the game/match but in sports such as surfing, consequence can be very high. As Mark says in video below "If you can't grasp the anxiety your mind creates and get it under track, you can't perform physically to the best of your ability". Creating scenarios that mimic the conditions that the athlete will perform in, can help with athletes grasping the anxiety and taking better control of the situation which will definitely result in a better outcome.