What Is Palm Cooling?
And how does it work?
Palm cooling uses specialized blood vessels in your palms to quickly regulate core temperature — a method pioneered by Stanford scientists. Whether you’re training, recovering, or managing heat-related symptoms, Cryo-1 makes this science accessible at home.
Ice Triggers Vasoconstriction
Ice has a role in injury care, but It does not effectively cool your body and can actually work against you.
When ice touches your skin, your body responds defensively.
- Blood vessels constrict
- Blood flow drops
- Heat exchange slows down
This response is called vasoconstriction, and it’s your body trying to protect itself from cold damage.
Less blood flow means less heat can leave your core.
So while ice feels cold on the surface, it blocks the very process required for whole-body cooling.
Extreme Cold Can Backfire
Using ice improperly can cause problems:
- Excessive vasoconstriction
- Reduced oxygen delivery
- Delayed recovery
- Nerve irritation
- Skin damage with prolonged exposure
And because inflammation plays a role in healing, over-suppressing circulation can slow repair, not speed it.
A solution for safe & efficient cooling
Working WITH the body.By targeting the body’s arteriovenous anastomoses (AVAs) in the palms, Cryo‑1 circulates cooled blood throughout the body. This delivers an overall sense of cooling and ease - something ice cannot achieve - because ice overcools surface tissue and shuts down circulation instead of promoting safe systemic heat exchange.
If your goal is to:
- Recover faster
- Reduce heat fatigue
- Manage hot flashes
- Stay cooler under stress
You need cooling that works with your physiology, not against it.
That starts by avoiding vasoconstriction and cooling where blood flow matters most.
