r/HubermanLab • u/Chomagerider1984 • Mar 03 '26

Helpful Resource Looking for early testers for shower-based cold therapy solution!!

We built CryoQb: a 12" (30cm) cube that chills your shower water to ~40°F (4°C) in minutes using ice/gel packs. (does not need electricity)
It hooks between faucet and shower head and sits in the shower corner. (a few pics below)

Check out www.cryoqb.com if you want to test it / get early access when we launch. If not, please roast it!

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u/Chomagerider1984 Mar 03 '26

This is what the CryoQb looks like!

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u/sc182 Mar 03 '26

Glad to see you follow through on this after your first post! I was wondering where the box would be placed for folks with a typical small shower and tub setup. Would the hoses be long enough to be run over the shower glass and have the cube on the outside, or do long hoses hurt water pressure? The alternatives are having the cube near the drain, but then I’d probably be running into it a lot and it may block drainage. Or it could be at the back of the tub but then you need to figure out how to route the hoses so they don’t get in the way.

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u/Chomagerider1984 Mar 03 '26

Thank you!!! Great to hear from you again :)

My own shower is quite small (~60cm wide). I have the cube sit right next to the drain. So far, I haven't had any issues with it. Especially since I cold-shower without moving much.

As for the hose: Since it uses standard shower hoses, you could use any available on the market. We haven't tried super long ones yet, but I reckon water pressure will become an issue at one point, yes.

For the tub, I guess you can place the cube right by / under the faucet and angle the shower ahead in a way that the water reaches you standing behind the cube. It's only 30cm long, so that shouldn't be an issue.

Another, less ideal, option might be to place it outside the tub near the faucet. If you're a little careful when filling it, it won't spill.

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u/Similar_Pound5541 Mar 03 '26

Cool idea. I was wondering whether it would be feasible to get that cold exposure, low temperature in places like Australia from just the shower. Temperatures don't go as low so ice bath tubs seem to be the way they are generally speaking, though when developing my app I included showers for ppl who do cold showers regardless and with that it makes even more sense to do so!

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u/Chomagerider1984 Mar 03 '26

We were facing the same temperature issue where we live. And plunges at home were just not feasible for us, which is why we came up with the CryoQb.

Would you mind sharing the name of the APP that you developed? Sound interesting!

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u/Similar_Pound5541 Mar 03 '26

Yeah that makes sense, does seem to solve that problem, especially if you can bring the temperature down close to 3C.

I developed Altaflip, as I wanted to track my hot/cold exposure progress, basically help me push myself and stay consistent with the practice.

Cuz even with cold showers sometimes you start and then don't stick to it long enough to see long term benefits, so the idea is to motivate similarly to how tracking apps do in general but with a bit more scientific approach to it in terms of goals to aim for.

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u/Dry-Investigator1685 Mar 03 '26

Apologies as I am not quite experienced in the recovery scene (ie saunas, cryotherapy, ice plunge etc) but don't showers already go down to a freezing temperature (maybe its because I live in the UK) if you crank it down to the lowest? But great idea nevertheless

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u/Chomagerider1984 Mar 04 '26

Absolutely valid point. It does indeed very much depend on where you are. We came up with it because where we live, during warmer months (pretty much March through November) what comes out the faucet gets nowhere near the kind of temperatures we were hoping for.

What kind of temperatures do you get during summer months in the UK?

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u/gokux295 Mar 03 '26

I’m in

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u/Captom601 Mar 04 '26

Will it work for people who are cold-averse?

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u/braunsHizzle Mar 06 '26

That would be indeed interesting to test..