Better Teams
Recruit the right people, improve communication and develop stronger leaders.
Fitness Club Dynamics helps you understand the behaviours, motivations and communication styles of your team and members. The result? Stronger teams, happier members and better retention.
Recruit the right people, improve communication and develop stronger leaders.
Understand what motivates each member and deliver a more personalised experience.
Increase engagement, build loyalty and create longer lasting memberships.
Be part of the journey. Help shape the future of how fitness clubs understand their people.
Privacy Policy | Version 1.0 | March 2026
How we collect, use and protect your personal information
Best Fit platform | bestfitdynamics.com
Best Fit Dynamics Ltd ("Best Fit", "we", "us") operates the Best Fit platform - a behavioural insight tool that helps gyms and fitness organisations understand how to communicate with and support their members and teams more effectively.
We are registered in England and Wales, company number 16799190. Our registered office is 39 Newnham Street, Ely, Cambridgeshire, CB7 4PQ. You can reach us at privacy@bestfitdynamics.com.
This policy applies to:
If you are a gym operator or business interested in subscribing to Best Fit, your relationship with us is also governed by our Business Terms, which set out our data protection obligations to you as a business customer.
When you complete a Best Fit questionnaire, the platform analyses your answers and places you into one of eight behavioural profiles. That profile, along with practical engagement insights, is then available to you and - depending on how your gym has configured things - to authorised gym staff.
This is called profiling. Under UK data protection law (the UK GDPR), we are required to tell you clearly that this happens, explain the logic, and make sure it is used fairly. The important things to know are:
| Type of data | What this includes | Where it comes from |
|---|---|---|
| Account information | Your name, email address, gym membership, account role | You or your gym when the account is created |
| Assessment responses | Your answers to the Best Fit questionnaire | You, when you complete the assessment |
| Your profile and insights | The behavioural archetype and engagement insights generated from your answers | Generated automatically by the platform from your responses |
| Technical data | IP address, browser and device type, session information | Collected automatically when you use the platform |
| Support data | Messages and information you send us when asking for help | You, when you contact support |
| Website interaction data | Pages visited, time on site, referral source (via cookies) | Collected automatically - see our Cookie Policy |
Under UK data protection law, we must have a legal reason ("lawful basis") for using your personal data. Here is what we use your data for and why we are allowed to.
| What we use your data for | Legal basis | More detail |
|---|---|---|
| Creating your account and letting you log in | Contract - necessary to provide the service | Without this we cannot give you access. |
| Running the assessment and generating your profile | Contract, or consent depending on your gym's setup | This is the core function of the service. |
| Sharing your profile with your gym's authorised staff | Legitimate interests of the gym and of Best Fit in delivering the contracted service | Your gym's privacy notice should also explain this. Sharing is limited to trained, authorised staff. |
| Answering support requests and resolving issues | Contract and legitimate interests | We keep support records to help resolve problems and to improve the service. |
| Keeping the platform secure | Legitimate interests | We use technical data to detect attacks, prevent fraud and protect all users. |
| Improving the product using anonymised data | Legitimate interests | We use aggregated, anonymised data - never identifiable profiles - to improve Best Fit and to produce industry insights. |
| Complying with legal obligations | Legal obligation | For example, financial records we are required to keep by law. |
When you use Best Fit through a gym, both your gym and Best Fit Dynamics have responsibilities for your data. Understanding this split helps you know who to contact if you have a question.
| Activity | Your gym's responsibility | Best Fit's responsibility |
|---|---|---|
| Deciding to use Best Fit and telling you about it | Your gym decides to subscribe and must inform you through their own privacy notice | We provide the tools and make the notices available |
| Storing and generating your profile from your answers | Your gym is the "data controller" - it decides the purpose | We are the "data processor" - we handle the data on the gym's instructions |
| Platform security, account management and support | Not responsible for our systems | We are solely responsible for platform security and our own systems |
| Decisions made using your profile (e.g. how you're communicated with) | Your gym decides how to use the insights - they are responsible for those decisions | We provide the tool only; we do not make decisions about you |
In short: if you have a question about how your gym is using your profile, contact your gym. If you have a question about your data on the Best Fit platform itself, contact us at privacy@bestfitdynamics.com.
We do not sell your personal data. We share it only in the following circumstances.
We will never share your individual, identified profile with any third party for advertising, marketing or commercial purposes without your explicit consent.
Some of our technology suppliers operate servers outside the United Kingdom. Where personal data is transferred outside the UK, we ensure appropriate safeguards are in place - typically the UK International Data Transfer Addendum or equivalent approved mechanisms - so that your data receives the same standard of protection as it does in the UK.
| Type of data | How long we keep it |
|---|---|
| Your account and profile | While your account is active, plus up to 12 months after it closes |
| Assessment responses and insights | Up to 24 months from your last use of the platform, unless your gym requests earlier deletion |
| Security and technical logs | Between 90 days and 12 months depending on the type |
| Support records | Up to 24 months from resolution |
| Financial and legal records | As required by law - typically 6 years |
Under UK data protection law, you have the following rights. You can exercise any of them by emailing privacy@bestfitdynamics.com. We will respond within one month.
| Your right | What it means in practice |
|---|---|
| Access | Ask for a copy of all the personal data we hold about you |
| Correction | Ask us to correct anything that is wrong or incomplete |
| Deletion | Ask us to delete your data (subject to any legal obligations we have to retain it) |
| Restriction | Ask us to pause using your data while a dispute is resolved |
| Objection | Object to certain uses of your data, particularly where we rely on legitimate interests |
| Portability | Receive your data in a common electronic format in certain circumstances |
| Withdraw consent | Where we asked for your consent, you can withdraw it at any time - this will not affect anything we did before you withdrew it |
| Human review | If you think a significant decision was made about you based solely on your automated profile, you can ask for a human to review it |
We use cookies and similar technologies on our website and platform. Strictly necessary cookies (for login and security) are always active. For analytics cookies we ask for your consent through our cookie banner. You can manage your preferences at any time through the cookie settings on the site.
Our full Cookie Policy, including a list of all cookies in use, is available in the Cookie Policy on this site.
We may use anonymised, aggregated data - meaning data that cannot be linked back to any individual person - to improve the Best Fit platform, to conduct research about engagement and behaviour in the fitness industry, and to publish statistics and insights. This will never include your name, your profile, or anything that could identify you as an individual.
Where we use a case study or testimonial that identifies a specific person or gym, we will always obtain explicit written consent first.
Best Fit is designed to be used across a range of contexts - not just gym membership, but also staff development, coaching team alignment, corporate wellness programmes and other fitness-related settings. Wherever it is used, the same principles apply: your profile is an engagement tool only, it must not be used as the sole basis for important decisions about you, and you always have the rights described in section 10.
If we introduce a new use of your data that is not described in this policy, we will update it and, where required by law, ask for your consent.
If you are unhappy about how we have handled your data, please email us first at privacy@bestfitdynamics.com and we will do our best to resolve it quickly.
You also have the right to complain to the Information Commissioner's Office (ICO): ico.org.uk or 0303 123 1113. We would always prefer to hear from you directly first, but you are not obliged to contact us before going to the ICO.
We will update this policy if the law changes or if we change how we use your data. If changes are material, we will let you know via the platform or by email. The current version date is shown on the cover of this document.
Terms of Business | Version 1.0 | March 2026
Terms of Business - Part A for gym operators
Best Fit platform | bestfitdynamics.com
These terms govern the relationship between Best Fit Dynamics Ltd ("Best Fit", "we", "us") and each gym or fitness organisation ("Gym") that subscribes to the Best Fit platform. By subscribing, the Gym agrees to these terms.
A separate Order Form records the commercial details (fees, term, number of users) for each subscription. Together, these documents and the incorporated policies form the complete agreement.
Best Fit provides a behavioural insight platform that generates one of eight behavioural profiles from structured questionnaire responses. The platform is designed to help gyms communicate more effectively with their members and teams, improve onboarding and retention, and align coaching and service delivery to individual preferences.
The platform may be used for gym members and for gym staff and coaching teams. Use in a staff or employment context must be carefully considered - see section A5.
Subject to payment of the agreed fees and compliance with these terms, Best Fit grants the Gym a non-exclusive right to access and use the platform during the subscription period for its internal business purposes only. The Gym may give access to authorised employees, contractors, coaches and members ("Authorised Users").
The Gym must not resell, sublicense or make the platform available to any third party without our prior written consent.
As the subscribing gym, you are responsible for:
Best Fit can be a valuable tool for building more effective gym teams and improving how coaches work together and communicate. However, because this involves processing data about employees or contractors, additional care is required.
You must not:
If you intend to use Best Fit with your staff team, we recommend ensuring this is covered in your employment contracts or staff handbook and that HR advice is taken. Best Fit does not replace employment assessment tools and does not constitute a capability or suitability evaluation.
The outputs generated by Best Fit are behavioural engagement insights only. They are not medical or psychological diagnoses, employment assessments, fitness evaluations or statements of character. They must not be described or used as any of these things.
No profile or archetype should be used to refuse membership, exclude a member from a programme, set discriminatory pricing or terms, or make any significant decision about an individual without independent human assessment and objective evidence.
The Data Processing Agreement ("DPA"), which forms part of the subscription documentation, governs our obligations to process personal data on your behalf as your data processor. The key points are:
Best Fit also processes certain data as an independent data controller - for example for platform security, account management and product improvement using anonymised data. Our Privacy Policy explains this fully.
Best Fit may use anonymised and aggregated data - data that cannot identify any individual or any specific gym - for product development, industry research and benchmarking, and to produce published insights about health, fitness and engagement trends. We will never publish data that identifies your gym or your members without your prior agreement.
Fees are as set out in the Order Form. Invoices are due within 30 days of issue unless otherwise agreed. If an invoice remains unpaid after a further 14 days' written notice, we may suspend access until payment is made. We will not suspend access in a way that puts personal data at risk or breaches a legal retention obligation.
Everything that makes Best Fit work - the platform, the questionnaire design, the eight archetypes, the scoring methodology, the algorithms, the interface and all related documentation - belongs to Best Fit Dynamics or our licensors. You get the right to use it, not to own it. Your members' and staff's data remains yours, subject to the DPA.
Nothing in these terms removes any liability that cannot be excluded by law (for example, for death or personal injury caused by our negligence). Subject to that:
Subscriptions run for the term in the Order Form and renew automatically unless either party gives 30 days' written notice before the renewal date. Either party may end the agreement immediately for material breach that is not fixed within 30 days of written notice. We may also end the agreement immediately if the platform is being used in an unlawful way that cannot quickly be remedied.
On termination, we will return or delete your data in accordance with the DPA and our Retention Schedule.
These terms are governed by the laws of England and Wales. Any dispute will be resolved in the courts of England and Wales.
Cookie Policy | Version 1.0 | March 2026
How we use cookies and similar technologies on Best Fit
Best Fit platform | bestfitdynamics.com
This Cookie Policy explains how Best Fit Dynamics Ltd ("Best Fit", "we", "us") uses cookies and similar technologies on bestfitdynamics.com and the Best Fit platform.
It should be read alongside our Privacy Policy, which explains how we use personal data more broadly.
Cookies are small text files placed on your device when you visit a website or use an online service. Similar technologies can include local storage, pixels, tags and software development kits. In this policy, we use the word "cookies" to refer to all of these technologies unless we say otherwise.
Best Fit uses the following categories of cookies and similar technologies:
| Category | What it does | Do we need your consent? |
|---|---|---|
| Strictly necessary cookies | These keep the platform secure, maintain your session, and allow core pages and forms to work properly. | No. These are required for the service to function. |
| Preference cookies | These remember choices such as your cookie settings. | Where they are used only to remember your cookie choice, they are treated as necessary for compliance and user experience. |
| Analytics cookies | These help us understand how people use the site and platform. | Yes. We will only activate these if you choose to accept them. |
| Advertising or marketing cookies | These are used to measure or personalise advertising and marketing activity. | Yes. We will only activate these if you choose to accept them. |
| Name | Purpose | Category | Duration |
|---|---|---|---|
| PHPSESSID | Maintains your session, keeps you logged in where applicable, and stores progress while you move through the assessment and portal. | Strictly necessary | Session |
| bfd_cookie_pref | Remembers whether you accepted or rejected optional cookies so that we can honour your choice. | Preference / necessary for consent management | 180 days |
At the date of this policy, optional analytics and advertising cookies are not required to use Best Fit. If we introduce optional cookies of this kind, we will ask for your consent before activating them and will update this policy to list them.
You can choose whether to accept or reject optional cookies through the cookie controls on this site. You can also revisit your choice at any time through the Cookie Policy and cookie settings on the site.
You can additionally control cookies through your browser settings. Please note that disabling strictly necessary cookies may prevent parts of the platform from working properly.
If we use third-party analytics, advertising or embedded content that sets cookies, those cookies will only be activated in line with your consent choices where consent is required. We will update this policy if those technologies are added.
We may update this Cookie Policy if the cookies or similar technologies used on the site change, or if the law changes. The current version date appears at the top of this document.
If you have questions about this Cookie Policy or our use of cookies and similar technologies, please contact privacy@bestfitdynamics.com.