An empty cold pool.

You pass through the center of the building, between the two main pools, to reach the far right corner. This is the smallest body of water here. Not many use it, but it has water so cold it feels like ice. Some say it's good for your skin, but it mostly just hurts a lot. Presumably though, it must also have the effects of a cold shower but to the ****. With nobody else around, you place your toe into it.

Ah! It's freezing cold. Even knowing that it was going to be isn't helping. You slowly submerge into the ice water until it's up to your stomach. You clench your teeth and tense up, wrapping your arms to reach a hand under both armpits. You shiver. For a long moment, you almost want to scream, but you finally let out a long sigh.

On the bright side, the stroking in your trunks slows and fades to almost nothing as the arousal becomes weakened. You lean on the side and watch the other pool-goers walk around while you freeze your ass off. It is strangely refreshing, though.

After awhile, you sit up from the water and rest on the tiles beside it. You need a bit to recover after that.

Finally you stand up and look around. You think you have enough time for maybe one more activity, and you see...