Terms of Use
Last updated: 2 October 2026
These terms govern your use of strengthinsight.app. By using this site you agree to them. StrengthInsight is an independent publication — there are no accounts and no user-submitted content.
About the service
StrengthInsight publishes research articles about fitness wearables, their metrics, and how to interpret training data. We also publish free tools. We may add, change or remove content at any time, and may retire guides when the underlying subject changes — as we did in October 2026 when a product was discontinued and the guides describing it were removed.
Not medical advice
Nothing on this site is medical advice. Wearable recovery, readiness, HRV and sleep metrics are not clinical measurements. Nothing here should be used to diagnose, treat or prevent any condition, or to decide whether to undertake physical activity. If you have a health condition, are pregnant, are recovering from injury, or are taking medication, talk to a qualified clinician before changing your training or training load. Stop exercising and seek medical advice if something feels wrong.
Not professional or fitness advice
The training methods described here are general information. We are not your coach, trainer, nutritionist or physio, we have not assessed your body, your history or your goals, and we cannot see your training data. What is appropriate for one person will not be appropriate for another. Use judgement.
Accuracy and limitations
We work to keep our guides accurate and we correct errors on the page — see our editorial standards. Even so:
- Product features, prices and availability change. Anything we state about a wearable is a dated snapshot. Verify with the manufacturer before making a purchase decision.
- Our analysis is reasoning, not measurement. We do not conduct controlled testing of the products we cover. Guides describe documented behaviour, published third-party research, or our own arithmetic, and each says which.
- Thresholds and heuristics are ours. Where we use a rule of thumb — a plateau definition, a sample-size convention — we say so, and we invite you to disagree with it.
You are responsible for your own decisions based on what you read here.
Affiliate links
Some guides contain affiliate links and earn a commission if you buy through them, at no additional cost to you. This never affects what we write or what we conclude. Where a guide contains them, it says so before you reach the links. Full detail is on our disclosure page. We do not accept payment for coverage of any product.
Intellectual property
The text and original diagrams on this site belong to StrengthInsight. You are welcome to quote from our guides with attribution and a link back, and to use our free tools however you like — including commercially. Please do not republish whole articles wholesale.
Product names, logos and trademarks mentioned here belong to their respective owners and are used for identification. Mentioning a product does not imply any endorsement of or affiliation with it. StrengthInsight is not affiliated with, endorsed by or sponsored by WHOOP, Fitbit, Garmin, Apple, Oura, Hevy, Strava, Amazon, or any other company whose products we cover.
Acceptable use
You may read, link to and quote from this site. You may not:
- Attempt to disrupt or overload the site, or probe it for vulnerabilities without telling us first.
- Use automated systems to scrape the site at a rate that degrades it for others.
- Misrepresent our research as your own, or strip attribution from material you republish.
External links
We link to vendor documentation, research papers and — where relevant — retailer and manufacturer pages. We do not control those sites and are not responsible for their content, accuracy or practices. Following an affiliate link takes you to a third party under that party's own terms and privacy policy.
Limitation of liability
To the fullest extent permitted by law, StrengthInsight and its contributors are not liable for any loss or damage arising from your use of this site or reliance on its content, including decisions to start, change or stop exercise, or to purchase or not purchase any product. Nothing here limits liability that cannot be limited by law.
Governing law
These terms are governed by the laws of England and Wales, without affecting any mandatory consumer protections available to you where you live.
Changes
We may update these terms. The date at the top always reflects the current version. Continuing to use the site after a change means you accept it. These terms were rewritten in October 2026 because the service they described no longer exists.