Looking for health hacks? There’s a growing body of scientific evidence that cold exposure can have some great benefits. Embracing the cold can improve circulation, boost your metabolism and burn certain kinds of fat, reduce inflammation, and even enhance immune function. It’s also great for mental toughness, willpower, and a mood boost! You don’t have to immerse yourself in an ice bath. Start by turning the shower to cold for 15-30 seconds and working up from there.