Not sure how big the tubes are, but I know if I just sprinted a 400m race (assuming I actually finished it and didn't blow an achilles) I'd want something larger than a snug coffin to warm down, stretch out, and circulate all the lactate out of my spent muscles. That might contribute to the broodstock model mortality, but then again, I'm outside my area of expertise. INteresting discussion though.

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"Laugh if you want to, it really is kinda funny, cuz the world is a car and you're the crash test dummy"
All Hail, The Devil Makes Three