How do Navy Seals deal with hypoxia?

Navy SEALs deal with hypoxia by focusing on controlling their breathing and oxygenation levels. Dominic D'Agostino, Ph.D., mentions that SEALs use strategies to manage oxygen toxicity, especially when using closed-circuit rebreathers. These devices allow them to recycle their breathing gas, reducing the risk of hypoxia at deep underwater levels. The fundamental approach revolves around understanding and dealing with high-pressure oxygen environments to mitigate the risks associated with oxygen toxicity in critical operations 1.