Amazon Prime Day: Best Health & Fitness Deals
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Amazon's day of deals — "Prime Day" — is here. To help you make the most of it, we've rounded up some of the best deals on health and fitness products, both practical and quirky. Prime day starts at 9 p.m. ET today (July 10), and continues all day tomorrow.

Editor's Note: Live Science sometimes recommends products to our readers, based on what we think our readers may find interesting and useful. Live Science may receive money when you click on the links on this page.

Fitbit Blaze: The Fitbit Blaze smart fitness watch lets you check heart rate quickly and easily while you're exercising. The watch is now $60 off, selling for $198.95 for Prime Members. 

Weighted hula hoop: Add some fun to your workout with this weighted hula hoop. Made for adults, exercising with this hoop can help work the core muscles. The hoop is now 54 percent off, selling for $22.99 until 3 p.m. ET on July 11, for Prime Members.

MIRA 17 Oz Stainless Steel Water Bottle: Hydration is key to a good workout, and good health in general, and a vacuum insulated water bottle can help keep drinks cold for longer. The bottle is now 28 percent off, selling for $17.95 for Prime Members.

The CamelBak Forge is aa 16-ounce, vacuum-insulated travel mug. It's leak proof and dishwasher safe. The mug is now 29 percent off, selling for $21.35 for Prime Members.

Polar M200 GPS Running Watch: Track your heart rate continuously throughout your workout with this watch from Polar. This watch currently sells for $140.00, but will be less tomorrow on Prime Day. This deal starts for Prime members at 6:30 a.m. ET, on Tuesday, July 11.