Training with supplemental oxygen - why it won't help at sea level

[QuittingBikes]

@Brennus

What causes oxygen toxicity?

I’m with @wasket on this one.

Here’s an alternative explanation:

Ask DAN: What is Oxygen Toxicity, and how can divers avoid it?

Max ppO2 is generally 1.4-1.6 ATM, although I’ve read that Navy divers go up 2.0.