Temperature is a shock-the-system hack that can help to reset your nervous system when you’re feeling panicky. Whether it’s a bag of frozen peas, or jumping in a plunge pool, cold temperature triggers your mammalian dive reflex - a super old alarm system in human brains; a survival instinct that all mammals have.
When you’re submerged in cold water, your body automatically conserves oxygen. And that’s great news for your nervous system. In cold temperatures, your heart rate slows, and your “rest and digest” system is triggered (the opposite to fight or flight mode). This means you instantly feel calmer and less anxious. It’s an amazing hack for when you want to regain control of your emotions. Scroll to watch cyclists Bradley and Ben Wiggins try this DBT technique.