Best Amazon Prime Day Deals Fitness Deals October 2025
Prime Day Isn't Over Yet — Don't Pass Up These Fitness Deals
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Vital Proteins Collagen Peptides Powder ($22, originally $31)
This collagen powder has earned its title as a wellness staple, and not just because Jennifer Aniston swears by it. The unflavored powder dissolves into coffee, smoothies, and more for a boost of collagen peptides that support healthy hair, skin, nails, and joints. It's an easy, low-lift way to work a little extra self-care into your daily routine, and the results are why so many people keep it stocked in their pantry.
Editor Quote: "Because this collagen peptides powder had no flavor, it was easy to mix into my foods or drinks. I never noticed a significant aftertaste (but for the record, this peptide powder is also available in flavors like chocolate, vanilla, and lemon)." — Christina Stiehl, former senior fitness editor