Performance Hack #3: Ice-Cold Showers Taking a freezing cold shower or sitting in a tub of icy water sounds like a painful form of self-inflicted torture, but it has been found to be a powerful performance hack. As you shock your body with cold water, your mind sharpens its focus. These ice baths can also heal muscle soreness after an intense workout, making you feel more energetic, and even help you sleep better. Research has shown that this practice also improves immunity and can increase metabolism. Taking a super cold shower first thing in the morning can shake you out of your groggy
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