Ready to refresh your gym kit? We'll let you in on a little secret. Amazon is a killer one-stop-shop for quality gear, from all your favorite brands, and what's more—nearly everything is discounted and available to be shipped to you quickly (and for free) thanks to your Prime membership. From Oura's proven Gen3 ring and some adjustable dumbbells to an upgraded shaker bottle and high performance protein powder, you can check a lot off your list.