Cold as a tool
Cold water is the oldest counterpart to bathing warmth — from the plunge pool after a sauna session via Kneipp's affusions to the ice hole of the Russian banya. What long counted as toughening-up folklore is today a firm component of modern regeneration programmes: the controlled cold stimulus belongs to the repertoire of many spa and longevity concepts, from the ice fountain in the sauna landscape to the guided winter swim in a lake.
What happens in the body
Cold water triggers an immediate reaction: the vessels contract, breath and pulse jump, the body releases stress hormones and mood-lifting messengers — followed by the re-warming, in which the vessels widen and a characteristic feeling of warmth and clarity sets in. Practised regularly, this interplay trains the vascular response — the same principle that Kneipp's hydrotherapy uses in the mild register, here in the vigorous variant.
Beginning safely
The rules are simple and not negotiable: never alone in open water, never overheated and never with alcohol, in slowly rather than jumping, keep breathing calmly and come out again after seconds rather than minutes the first few times. Head above water, warm clothing and a hat for afterwards. People with cardiovascular conditions clarify with a doctor beforehand whether and in what dose cold suits them — the stimulus is considerable.
Ice bathing in a spa hotel
The spa landscape supplies the measured forms: a plunge pool, an ice fountain and a snow room after the sauna, a Kneipp basin for the mild school. Houses on cold lakes turn the natural bath into a ritual in winter — and the longevity programmes of modern resorts run cold as a fixed building block, there usually in the equipment-based sister form of cryotherapy. For the mood afterwards there are in any case few more reliable tools.
