Holding breath

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AlanGunhouse
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Holding breath

Unread post by AlanGunhouse »

Does anyone know how to calculate how long someone can hold their breath? Someone just through a gas grenade into a room with my players and I wanted to know how long they can go before having to breathe the gas.
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Axelmania
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Re: Holding breath

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Perhaps the SCUBA skill? Books aren't on me.
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acreRake
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Re: Holding breath

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Borast
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Re: Holding breath

Unread post by Borast »

Heh...gotta live homonyms. :) I think you meant "threw."

It is dependant on many things...physical health is a big part of it, but not as big as one might think. Level of ACTIVITY is a far more important factor. The 30 kilo guy laying on his death-bed can probably hold his breath longer than the 120 kilo athlete sprinting on a track.

Generally, someone who has not trained can generally only hold their breath less than a minute.
If they took a deep breath before they needed to hold, maybe a minute and change.

Someone whom is trained can hold their breath for up to 4-5 minutes, but this also involves several minutes of "pre-breathing." (For an extreme example, Free-divers can dive [World Record here] to over 200 metres, and hold their breath for as long as 22 minutes and change!)

Keep in mind, if you are suddenly in a 100% oxygen-less area, you typically have about 15 SECONDS of useable O2 in your bloodstream, then hypoxia sets-in.


If your PCs are in a room that they can't escape within 2 melee rounds, consider the gas wins. If they made the save, they managed to pull enough air to make the escape attempt...or put-on an air mask.

One additional thing to consider...what *is* the gas? After all, no all gasses have to be BREATHED. Simply having it touch you is enough. (i.e.: Mustard gas caused contact burns to the skin of soldiers in the trenches, the gas masks just protected their faces and lungs.) After all, many substances have a transdermal effect. (Ever hear of a "contact high"? ;) )


For a simple mechanic, I`d suggest 15 seconds plus 1 second per PE attribute point, plus PE bonus in seconds, halved in stress situations, and halved again under high activity conditions.
Last edited by Borast on Mon Oct 15, 2018 6:00 am, edited 1 time in total.
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AlanGunhouse
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Re: Holding breath

Unread post by AlanGunhouse »

I went with 5 or 6 seconds per point of PE, adjusted for level of exertion and preparation (and, of course, for doing things like talking or casting spells).
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