Editor-Approved Prime Day Fitness Deals, From the Oura Ring to Energy Drinks

Nuun Sport Electrolyte Tablets ($22, originally $30)

For runners, cyclists, and hot Pilates fans, electrolytes can be a helpful part of a long workout, especially in the heat. These tablets dissolve quickly in water and contain less than one gram of sugar. They're also non-GMO, gluten-free, and vegan with added magnesium. The Citrus Berry Twist flavor is on sale now, making it a good time to give them a try.