Contrast therapy guides

Practical, hype-free guides to cold plunging, saunas, and red light therapy — what things cost, what to expect, and how to stay safe.

⚠️ Check with your doctor first. Cold immersion stresses the cardiovascular system. If you have a heart condition, high or low blood pressure, or are pregnant, consult a physician before cold plunging. See our wellness disclaimer.

Free tools

Two interactive tools that pair with these guides — no account, no download.

Most popular🧮Cost calculator

Studio membership or your own tub? Enter your plunge habit and see the exact month a tub pays for itself.

⏱️Plunge timer

Guided box-breathing warmup, plunge countdown, and rest — with gentle audio cues. Built for your phone.