[johanneskanybal]

If you're 104 and takes long walks everyday that's the more extreme element rather than cold showers. But sure a great morning routine with the adrenaline boost from cold water might give you the edge to actually take that morning walk.

[djedr]

yeah, definitely it works like this; it has a stimulating effect

in many ways better than a coffee, although not pleasant

like a slap in the face

helps you locate your socks, to quote a classic

but yeah, no reason why just taking cold showers alone and then sitting around should have any magical effect

so perhaps it should be seen as a catalyst to being active; that's already significant