[HobieScot]

Disclaimer - you might pass out trying this so do so at your own risk

For those that haven't tried free diving here is a little trick to give you an idea of what it's like to free dive to 70 feet

At 70 feet you are at 11.6 fathoms or a little over two atmospheres. At each atmosphere the air in your lungs compress.

If you watch the video Danowar starts his decent at 2:10 and it looks like he is already 30 feet down when the video cuts in to the decent. The video ends at the surface at 1:15. So that's 55 seconds underwater. But since he started the video almost half of the way down let's add another 15 seconds so that 70 seconds.

try this, lay down (especially if you smoke) and get comfortable. Now take three slow breaths to the top of your lung capacity. At the end of the last breath see if you can hold it for 70 seconds. I bet half or more of you can. Most people can hold for 60-90 seconds which is normal.

The average adult male has a lung volume of around 6 liters. At two fathoms that same 6 liters of air gets compressed down to less than one liter.

To experience what that is like take a full deap breath in, then let it out till you come to your normal pause right before you would normally start your inhale again. Now breath in again and when you get to the bottom of your breath before you start your normal inhale again stop and hold your breath at that point for 70 seconds.

When you exhale normally you actually still have about 1 liter of air in your lungs unless you use your chest and abdominals to force the last of your breath out.

At 2 fathoms that same 6 liter lung full of air gets compressed to under one liter. So if you can fully exhale all of the air out of your lungs and can then hold your breath for 70 seconds you might have an idea of what it's like to free dive to 70 feet like Danowar did in the video





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