Thermos sponsored a recent study with leading fitness researchers and discovered that cold hydration increases performance when exercising. Sipping down cold water (40° F) has been shown to keep a person's core temperature down, and drinking enough water will help you exercise longer and harder. I'll drink to that! Depending on the length of your workout, whether it's a 30-minute run or a 6-hour hike, here are some items you'll need to keep your water frosty cold in the Summer heat.
Gear to Keep Your Water Cold When Exercising in the Heat
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