noun, noun or participle which takes 'suru'
cold bath; cold shower
Refers to bathing or showering in cold water, often for health or refreshment. Can be used as a noun or with する to mean 'take a cold bath/shower'.
朝、冷水浴をすると目が覚める。
Taking a cold shower in the morning wakes me up.
彼は健康のために毎日冷水浴
He takes a cold bath every day for his health.