In the northern hemisphere, it's hard to not spend the winter in a state of slumbering sloth, just waiting for sunshine and good times to start again. Conveniently, Prime Day fitness tracker deals (all four days of them) drop right in the middle of summer, which makes this a great time to pick up the smartwatch or smart ring that you just didn't have the cash for at Christmas.

This year, you have four whole days to shop the Amazon deals, but if you don't want to take that much time, I've highlighted the sales on some of our favorite fitness trackers and smart rings. Not a subscriber yet? Perhaps our list of the best Amazon Prime Perks can convince you to sign up. Deal hunters should also check out our Best Amazon Prime Day Deals roundup and Prime Day liveblog.

WIRED Featured Deals

• The best smart ring: Oura Ring 4 for $339 ($60 off)
• Our favorite fitness tracker: