Last updated: July 26, 2026
1. Service Operator
Operator: ARENA Centrum s.r.o.
Company ID: 06753051
Registration: Commercial Register kept by the Municipal Court in Prague, file no. C 288289
Registered office: Palackého 717/11, 110 00 Prague 1, Czech Republic
Email: info@mojeinbody.cz
Phone: +420 228 225 751 (reception)
We are not VAT payers.
(hereinafter the "Operator")
Locations where measurements take place:
- ARENA GYM Jinonice, V Zářezu 902/4, 158 00 Prague 5,
- ARENA GYM Centrum, Palackého 717/11, 110 00 Prague 1.
2. Definitions
2.1 Service means the web interface available at the MojeInBody.cz domain, which primarily provides access to body composition measurement results and related features.
2.2 User means a natural person who uses the Service and has a user account.
2.3 Account means a user account created within the Service.
2.4 Results mean data and outputs from measurements taken on the Operator's devices (primarily InBody, also MaxPulse, grip strength and blood pressure measurements) and their historical overviews within the Service.
2.5 AI report means an automated text output created at the User's request based on Results.
2.6 Results Sharing means the feature allowing Results to be made available to a selected User within the scope set out in these Terms.
2.7 Public link means a link to a specific measurement created by the User, allowing selected values to be viewed without signing in.
3. Subject and Scope of the Service
3.1 These Terms govern the use of the Service, which primarily enables:
- access to the history of measurement Results,
- management of basic data and Account settings,
- use of additional features (for example on-demand AI report, goals, measurement notes, or comments),
- sharing Results with another User (for example a trainer / partner) or via a Public link,
- display of information about vouchers, discounts, extended-results access, and related offers (where available in the Service),
- online ordering of gift vouchers and extended-results access,
- display of invoices, receipts, or an overview of online orders,
- sending notifications related to Account operation (especially about the availability of new Results).
3.2 The Service is not a healthcare service. Through the Service, the Operator does not provide healthcare, medical diagnostics, or treatment recommendations.
3.3 Selected products and digital access can be ordered online, see Article 11. Other payments are made on site at our locations or as individually agreed.
4. Account Creation and Use
4.1 The Account is created by the User's registration in the Service. An email address is sufficient to register; a completed measurement is not required.
4.2 Signing in to the Account uses one of the available methods, in particular a password or verification of the email address with a one-time login code sent to that address. The User may choose to have a device remembered so that signing in does not have to be repeated at every visit.
4.3 The User must provide truthful and current data and keep it up to date. Some data may be view-only in the Service, and its change is handled through a request to the Operator so that it is correctly reflected in downstream systems and records.
4.4 The User is responsible for securing their email and the device used to sign in to the Account.
4.5 The Operator may temporarily restrict or block access to the Account for security reasons or upon reasonable suspicion of Service misuse.
5. Minor Users
5.1 Persons under 18 may use the Service if they have the consent of their legal guardian, where such consent is required by law.
5.2 In justified cases, the Operator is entitled to request proof of the legal guardian's consent (for example in a dispute, upon a deletion request, etc.).
5.3 If the Operator finds that an Account was created by a minor without the required guardian consent, it may suspend or cancel the Account.
6. Measurement Results and Their Nature
6.1 Results are informational and their accuracy may be affected by many factors (for example hydration, time of measurement, physical activity, health condition).
6.2 The Operator does not guarantee that Results are error-free and is not liable for User decisions made solely on the basis of Results without professional assessment.
6.3 The User acknowledges that the interpretation of Results should be assessed in the context of other information and, where appropriate, professional advice.
7. AI Report
7.1 The AI report is generated solely upon the User's active request within the Service (for example by clicking a button).
7.2 The AI report is provided as an informational output and does not replace a medical examination, diagnosis, or treatment recommendation.
7.3 The User acknowledges that the AI report may contain inaccuracies, omissions, or inappropriate conclusions.
7.4 The AI report may be created using third-party technologies. The Operator endeavors to transfer only data necessary to create the AI report.
7.5 The User acknowledges that a generated AI report is stored in the Service database with the relevant measurement and is available to the User in the Account until the measurement is deleted or the Account is cancelled (in accordance with the settings and deletion terms in Article 15).
8. Communication and Notifications
8.1 The Operator may send emails related to Account and Service operation, in particular:
- login or security messages,
- information about the availability of new measurement Results,
- information about online orders, payments, and tax documents,
- operational notices (for example planned downtime),
- voucher information (for example reminders that validity is about to end),
- information about referring a friend or about offers for a repeat measurement.
8.2 The scope and type of notifications may depend on the User's settings, the nature of the message, and security requirements. Marketing messages can be unsubscribed at any time in Account settings or via the link in the email footer.
8.3 If the User activates Results Sharing, the Operator may also send related notifications to the Sharing recipient (for example a request to confirm Sharing or information about a new shared measurement), depending on settings and the nature of the message.
9. Results Sharing Between Users
9.1 The User may create Results Sharing within the Service with another User (for example a trainer or partner).
9.2 If the entered email is not yet registered in the Service, the Operator sends an invitation to register to that address. The invitation is valid for 30 days; Sharing is created only after registration and confirmation by the recipient.
9.3 Sharing becomes active only after confirmation by the Sharing recipient.
9.4 Within active Sharing, the recipient is given access to all historical and future measurements of the sharing User, including result sheet images and existing AI reports.
9.5 The User's own measurement notes are not made available to the Sharing recipient.
9.6 Sharing may be terminated at any time by both the sharing User and the recipient; termination takes effect without undue delay after being performed in the Service.
9.7 The User is responsible for whom they grant Results Sharing to and whose email address they enter into the Service. The Operator is not liable for the recipient's further handling of data after it has been made available within active Sharing.
10. Public Measurement Link
10.1 The User may create a Public link for a specific measurement. Anyone who knows the link can view selected values of that measurement, and depending on the User's choice also a trend chart or the AI report, without signing in and without any further verification.
10.2 The Public link does not contain the User's name or contact details. The displayed values are nevertheless health data, and the User is responsible for whom they pass the link to.
10.3 The Public link remains valid until the User disables it in the Account; it does not expire on its own. The Operator records the number of views and the time the link was last opened.
10.4 The Operator may deactivate a Public link upon reasonable suspicion of Service misuse.
11. Online Orders, Payment, and Gift Vouchers
11.1 A gift voucher and extended-results access can be ordered online. Prices are stated with the specific offer in the Service and are final.
11.2 An order is a proposal to conclude a contract; the contract is concluded once the payment is credited and the order is confirmed by the Operator. The tax document is made available to the User in the Account and sent by email.
11.3 The only online payment method is bank transfer. The User receives payment details including a variable symbol and a QR code. Payments are matched automatically, typically within 30 seconds after being credited; in exceptional cases, additional verification may be required. The Operator cancels unpaid orders after a reasonable period. The User may cancel an unpaid order and edit the selection; it should not be cancelled after the payment has been sent.
11.4 Extended results are activated upon receipt of payment for the period stated with the offer. Access ends when that period expires; no automatic renewal or recurring payment is arranged.
11.5 Gift voucher:
- the voucher code must be redeemed in the Account within 12 months of payment; after that period the voucher expires,
- once redeemed, the voucher is valid for the period stated with the specific product (typically a further 12 months),
- the voucher is transferable — it may be redeemed by any User who knows the code; upon redemption it is bound to that User's Account and cannot be redeemed again,
- a multi-measurement voucher may be drawn down measurement by measurement; any unused balance is not refunded or exchanged for money after expiry,
- after payment matching, a purchased voucher is available for download and printing in the buyer's Account and is also sent to the verified email address,
- the Operator is responsible for secure handling of the code only until it is sent to the address specified by the User.
11.6 One order may contain multiple gift vouchers. The User pays for them with one aggregate
payment and receives the individual codes at the buyer's verified email address after the full
payment has been matched. The User submits the order using the “Place order with obligation to pay”
button. A verified email is sufficient for the purchase; the Operator may create or use an
existing Account to retain the order and vouchers without requiring measurement profile details.
Purchased vouchers remain in the history of that Account regardless of whether the purchase was
started on the public website or from the Account. After payment matching, the email contains all
vouchers and a link to the corresponding tax document.
12. Withdrawal, Complaints, and Dispute Resolution
12.1 If the User is a consumer, they have the right to withdraw from a contract concluded online within 14 days of its conclusion, without giving a reason. It is sufficient to send the withdrawal by email to info@mojeinbody.cz.
12.2 For a gift voucher, withdrawal is possible if the voucher has not yet been redeemed. If the voucher has already been redeemed and the measurement performed, the service has been provided and the right of withdrawal does not apply to it.
12.3 Extended-results access is digital content. If, when ordering, the User expressly requests immediate provision and confirms that they thereby lose the right of withdrawal, the right of withdrawal expires upon full provision of the performance. Otherwise the User may withdraw within the period under Article 12.1.
12.4 The Operator returns payments received no later than 14 days after withdrawal, usually to the account from which the payment was received.
12.5 Complaints about defects in the service or digital content provided are to be made by the User by email to info@mojeinbody.cz or in person at our locations. The Operator will handle the complaint without undue delay, no later than within 30 days of it being made, unless agreed otherwise.
12.6 Out-of-court resolution of consumer disputes may be conducted by the Czech Trade Inspection Authority, Central Inspectorate — ADR Department, Gorazdova 1969/24, 120 00 Prague 2, adr.coi.cz. The User may turn to it if a dispute cannot be resolved directly with the Operator.
12.7 Supervision of compliance with consumer protection regulations is exercised by the Czech Trade Inspection Authority, coi.cz.
13. Usage Rules and Prohibited Conduct
13.1 The User undertakes to use the Service in accordance with legal regulations and these Terms.
13.2 The User must not, in particular:
- compromise the security or technical operation of the Service, circumvent security measures, or perform vulnerability testing without the Operator's prior written consent,
- obtain or attempt to obtain access to other persons' Accounts or data,
- use automated tools for bulk data extraction (scraping),
- use the Service in a way that may lead to its overload or outages.
13.3 Breach of these rules may lead to restriction or cancellation of the Account.
14. Service Availability and Technical Limitations
14.1 The Operator strives for continuous availability of the Service but does not guarantee uninterrupted operation.
14.2 Planned downtime, maintenance, or outages caused by third parties may occur.
14.3 The Operator may continuously modify, extend, or technically change the Service.
15. Deletion of Measurement Data, Account Cancellation, and Data Access
15.1 The User may at any time request irreversible deletion of all measurement data (including linked AI reports and related result sheets):
- through features directly in the Service, or
- by email at info@mojeinbody.cz.
15.2 The User may at any time request Account cancellation:
- through features directly in the Service (where available), or
- by email at info@mojeinbody.cz.
15.3 The Operator may retain certain data where necessary to comply with legal obligations or to protect legitimate interests (for example dispute resolution, accounting and tax records, or payment records), always only for the necessary period and to the necessary extent.
15.4 After Account cancellation, access to Results and AI reports may be terminated.
16. Liability
16.1 The Operator is responsible for providing the Service to a reasonable scope and quality.
16.2 To the maximum extent permitted by law, the Operator is not liable for damage arising in particular from:
- incorrect use of the Service or interpretation of Results or the AI report without professional assessment,
- unavailability of the Service caused by circumstances beyond the Operator's control,
- misuse of the Account as a result of a breach of security obligations on the User's side,
- disclosure of Results through Sharing or a Public link created by the User themselves.
16.3 Nothing in these Terms excludes or limits liability that cannot be excluded by law (for example damage caused intentionally), nor the statutory rights of consumers.
17. Intellectual Property
17.1 The Service, its software, texts, graphics, and other elements are protected by intellectual property rights.
17.2 The User is entitled to use the Service only for personal purposes within the scope of ordinary use.
18. Personal Data Processing
18.1 Information about personal data processing is set out in the Privacy Notice available on the MojeInBody.cz website.
18.2 The User acknowledges that the processing of Results (and any AI reports), including Results Sharing and the Public link, is governed by that document.
18.3 Information about the use of cookies and analytics tools (including consent management) is set out in the same document and in the cookie settings banner interface.
19. Changes to the Terms
19.1 The Operator is entitled to reasonably amend these Terms, in particular due to changes in legislation, security, or Service development.
19.2 The current version is always published on this page with the last updated date.
19.3 If changes materially affect the use of the Service, the Operator may inform the User by email or in the Service interface.
20. Governing Law
20.1 These Terms are governed by the laws of the Czech Republic.
20.2 Any disputes will be resolved by the substantively and locally competent courts of the Czech Republic, unless mandatory regulations provide otherwise. This is without prejudice to Article 12.6.
21. Contact
21.1 Send questions about these Terms to info@mojeinbody.cz.