dschonbrun
Contributor
PPO2 has been mentioned above, and it's interesting to note that the max PPO2 recommended for recreational divers has diminshed steadily from 2.0 to 1.4 in the last 25 years.
With nitrox being readily available in many dive spots, rebreather use increasing, and trimix more approachable than ever... the need to push the limits of Narcosis and Toxicity have diminished steadily.
It all comes down to why you dive...
1. To see/experience great things underwater
2. To find/push your physical and mental limits
3. "Numbers"
- To acheive a depth/time/gas combination
- To acheive a number of dives
When I started diving, I was all about the numbers (3). As I progressed, it became more about understanding my physical and mental limits (2). Now, I love to learn, and to experience new places, sights, and people (1). Remaining sharp by testing limits is an important thing to do on an annual/semi-annual basis... but not on every dive.
With nitrox being readily available in many dive spots, rebreather use increasing, and trimix more approachable than ever... the need to push the limits of Narcosis and Toxicity have diminished steadily.
It all comes down to why you dive...
1. To see/experience great things underwater
2. To find/push your physical and mental limits
3. "Numbers"
- To acheive a depth/time/gas combination
- To acheive a number of dives
When I started diving, I was all about the numbers (3). As I progressed, it became more about understanding my physical and mental limits (2). Now, I love to learn, and to experience new places, sights, and people (1). Remaining sharp by testing limits is an important thing to do on an annual/semi-annual basis... but not on every dive.