Whether you’re looking to burn calories, track sleep or calculate your daily step count, the best fitness trackers can do it all.They’re not always cheap, either, so events like Amazon Prime Day are well worth a look for snipping the prices down to be more affordable.This year has brought us a few excellent fitness tracker deals, which we’ve rounded up below. From Fitbit to Garmin and Samsung, here are some of our favorites.You can get some of the best fitness trackers around on sale right now at Amazon from $79.Top Prime Day fitness tracker deals todayBest Prime Day fitness tracker dealsRead our Amazon Prime Day science deals page for big discounts on the best health and fitness kit and science gear as we enter the summer sales event.Today’s best Fitness Tracker dealsCheck out our other guides to the best air purifiers, air purifiers for allergies, the best telescopes, microscopes for students, binoculars, rowing machines, electric toothbrushes and more.Get the world’s most fascinating discoveries delivered straight to your inbox.