&quot;But really, at the end of the day, they did this because it was a rush&quot;<p>Diving isn&#x27;t really compatible with &quot;a rush&quot;, especially not cave or other technical diving. You have to be focused, methodical and patient. It&#x27;s more meditative than anything, you can&#x27;t even breath too quickly without risk. While still having to keep track of a lot of things. In &quot;rush&quot; type of activities it&#x27;s the sensation of almost losing control that is fulfilling, while in technical activities like this it&#x27;s rather the sensation of being in control.