During a busy day of bodywork, your muscles—specifically in the forearms and shoulders—can become ischemic. This means the sustained contraction has restricted blood flow, allowing metabolic waste to build up in the tissue.

How Hot and Cold “Pump” the Tissue

Contrast therapy utilizes the body’s natural vasomotor response to create a mechanical pump for the circulatory system:

[Image of Vasodilation vs Vasoconstriction in blood vessels]

• Heat (Vasodilation): 3 minutes of hot water expands the blood vessels, bringing fresh, oxygenated blood into the ischemic zones.
• Cold (Vasoconstriction): 1 minute of cold water causes the vessels to shrink rapidly, “squeezing” metabolic byproducts and inflammatory fluids out of the tissue and back toward the lymphatic system.

The “3-1” Protocol for Therapists

After your last client, perform 3 to 5 rounds of the following in a sink or shower:

1. HOT (as warm as is safe): 3 Minutes
2. COLD (as cold as you can stand): 1 Minute
3. ALWAYS end on cold to close the vessels and reduce post-work inflammation.