AFFILIATE DISCLOSURE
Last updated: March 24, 2026
Amazon Associates Disclosure
Charles Fit Lab is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.
What This Means
When you click on product links on this website and make a purchase on Amazon, Charles Fit Lab earns a small commission. This commission comes from Amazon — it does not add any cost to you whatsoever. The price you pay on Amazon is exactly the same whether you arrive through our link or type the address directly.
FTC Compliance
In accordance with the Federal Trade Commission (FTC) guidelines (16 CFR Part 255), we are required to disclose when we have a financial relationship with a company whose products we mention. Affiliate links on this site are clearly used to generate income that supports the creation of free content.
Our Recommendation Standards
Earning affiliate commissions does not influence which products we recommend. Our recommendations are based on: • Personal research and product testing where possible • Scientific evidence and peer-reviewed studies • Alignment with the values of science-backed, effective fitness • Genuine belief that the product can benefit our readers We will never recommend a product simply because it pays a higher commission. We turn down affiliate opportunities when the product doesn't meet our standards.
Other Affiliate Programs
In addition to Amazon, Charles Fit Lab may participate in other affiliate programs from time to time. All affiliate relationships will be disclosed in the same transparent manner.
How to Identify Affiliate Links
Affiliate links may be accompanied by disclosures such as "(affiliate link)", "(Amazon link)", or similar text. Articles that contain affiliate recommendations include a disclosure notice at the top of the page. You are never obligated to use our affiliate links — you can always visit Amazon directly.
Affiliate links never cost you extra
We only recommend trusted products
Commissions fund free content
Our opinions are always our own