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

Renoj Store Resistance Bands Exercise Bands Set ($8, originally $14)

These bestselling loop exercise bands have a fan in pro tennis player Tommy Paul — and they're 29 percent off for Prime Day. Shoppers love that they're compact, easy to store, and simple to pack for travel. They're also a handy way to add resistance to strength workouts. "You can grab them pretty much anywhere, and they're unreal for warming up before practices or matches," Paul shared in a previous interview with Popsugar. "Honestly, it can be harder than the actual lift itself."