Contrast therapy means switching between heat and cold. Warm up in a hot tub or an infrared sauna, take a short dip in a cold plunge, then go back to the heat. A few rounds, and most people finish feeling awake and loose.
People use it after workouts, first thing in the morning or to wind down at night. With a hot tub or sauna and a cold plunge in the backyard, it’s a few steps instead of a drive to the gym.