Terms and conditions
Last updated: 5 July 2026
These terms and conditions apply to all agreements, plans, subscriptions and services offered by HYTX (hereinafter 'HYTX', 'we' or 'us'), with its registered office in Antwerp, to its customers (hereinafter 'the athlete' or 'the customer').
By registering for a plan, subscription or individual service at HYTX, the athlete expressly agrees to the conditions below.
1. Definitions
- Plan: an annual, quarterly or monthly plan (including Bronze, Silver, Gold or equivalent names) for running, cycling, duathlon, triathlon or swimming as offered on hytx.be.
- Annual contract: an agreement with a fixed term of twelve (12) months, regardless of the chosen payment method (in a single instalment or spread monthly).
- Credits: the internal means of payment of HYTX with which the athlete gains access to additional services, as further described in the credit conditions on the website.
- Session or appointment: any booked coaching, test, analysis or training moment, individual or in a group.
2. Scope
These terms and conditions apply to every registration, quote, invoice and agreement between HYTX and the athlete, to the exclusion of any of the athlete's own conditions. Deviations are only valid if confirmed in writing by Marvin on behalf of HYTX.
3. Formation of the agreement
The agreement comes into being at the moment the athlete registers online or on site for a plan and the first payment (or the first direct debit order) is confirmed by HYTX. Prior to registration, the athlete receives clear information about the content, price, term and cancellation terms of the chosen plan.
4. Duration and renewal of the agreement
Annual plan
An annual plan is concluded for a fixed, uninterrupted period of 12 months, regardless of whether the athlete chooses payment in a single instalment or via monthly instalments. The chosen payment method does not change the duration or the binding nature of the annual contract.
At the latest 6 weeks before the end of the term, the athlete receives a reminder (by email or via the app) about the upcoming end of the contract. If HYTX receives no counter-notice from the athlete before the start date of the new contract year, the plan is tacitly renewed for a new period of 12 months, under the same conditions.
If a price change or indexation applies to the renewed plan, this is always communicated to the athlete in advance and clearly, at the latest at the time of the reminder mentioned in the previous paragraph.
Quarterly plan
A quarterly plan runs for a fixed period of 3 months. If HYTX receives no counter-notice from the athlete before the start of a new quarterly period, the plan is automatically renewed for a new period of 3 months under the same conditions, including the associated start-up lactate tests, which are charged again at each renewal without counter-notice from the athlete.
Monthly subscriptions and credit bundles
Monthly subscriptions (including Starter, Active, Intense) and unlimited passes are ongoing agreements of indefinite duration, cancellable with a notice period of 1 calendar month, taking effect on the next invoice date. Purchased credit bundles are one-off purchases and do not fall under this cancellation arrangement; they expire according to the validity period stated with the relevant bundle.
5. Prices and payment
All prices are stated on hytx.be and are inclusive of VAT, unless indicated otherwise. HYTX reserves the right to index prices annually upon renewal of a plan; existing annual contracts are not adjusted in the interim.
Payments for annual plans are made either fully in advance (single instalment), or spread via monthly direct debit. In the event of late payment, HYTX reserves the right to suspend access to services after a written notice of default that remains without effect within 8 calendar days.
6. Cancellation of individual sessions and appointments
A booked session, appointment, test or analysis can be cancelled or rescheduled free of charge up to no later than 24 hours before the scheduled time.
If an appointment is cancelled or rescheduled within the 24 hours before the start, or does not take place due to the athlete's absence without timely notice, the athlete owes a fixed cancellation fee of €15 per cancelled session. This amount is charged on top of the plan price already due and serves to compensate for the reserved coach and infrastructure capacity.
This cancellation fee does not apply in the event of force majeure on the part of the athlete (see article 13), provided a valid supporting document (e.g. a medical certificate) is submitted within 5 calendar days of the missed appointment.
7. Early termination of an annual contract
An annual contract is a commitment for the full duration of 12 months and cannot be terminated unilaterally and prematurely by the athlete, except for the legal exceptions provided for in article 8 (right of withdrawal), in the event of proven force majeure (article 13), or in the event of an injury as set out in article 9.
If the athlete nevertheless decides to end the collaboration before the end of the 12-month term, the full remaining balance of the annual contract remains due. This remaining amount is calculated as the difference between the total contract value for 12 months and the instalments already paid, and becomes due in a single sum at the moment of termination.
HYTX reserves the right to deviate from this in specific and justified cases. A decision on this is taken exclusively by Marvin.
8. Right of withdrawal
For registrations concluded at a distance (e.g. via the website), the athlete as a consumer in principle has a right of withdrawal of 14 calendar days from the registration date, in accordance with the Belgian Code of Economic Law.
If the athlete expressly requests that the service (e.g. an intake conversation or first lactate test) already start before the expiry of this period, the right of withdrawal lapses for the part of the service already delivered, and the athlete owes an amount in proportion to what has already been performed at the moment of withdrawal.
9. Pausing the agreement due to injury
An annual contract or quarterly plan can only be paused if the athlete, as a result of an injury, is unable to do sport for longer than 1 month. This impossibility must be confirmed by a doctor or by the physiotherapist affiliated with HYTX, by means of a written certificate. Outside this specific situation, pausing the contract is not possible.
During the pause, payment is suspended and no coaching takes place. The end date of the contract is, after approval by Marvin, shifted by a period equal to the duration of the pause, so that the athlete in total always pays for and is coached within 12 full months of the chosen annual plan.
10. Obligations of the athlete
The athlete declares to be in sufficiently good health to take part in the chosen training, tests and sessions, and reports relevant medical conditions or injuries to HYTX in advance. The athlete follows the instructions of the coaches and respects the house rules of the infrastructure and facilities used. Personal training and test data are processed by HYTX with a view to the correct follow-up of the athlete.
11. Use of imagery
During group training, testing, competitions and social events organised by HYTX, photos and videos may be taken in which the athlete is visible. By registering for a plan or taking part in a HYTX activity, the athlete agrees that this imagery may be used and shared by HYTX on its social media, website and other communication channels.
If the athlete does not wish imagery in which he or she is recognisable to be used or shared, the athlete must report this to HYTX in advance and in writing, via hello@hytx.be. HYTX will then take this into account in future publications.
12. Liability
HYTX commits to a best-efforts obligation and provides its services with the necessary care and expertise. The athlete, in turn, is expected to always use their own common sense during training, tests and sessions and to respect their own physical limits.
HYTX is not liable for bodily injury, injuries or damage arising from the practice of sport, human errors during training, or the athlete's failure to follow the coach's instructions, except in the event of proven serious fault, intent or gross negligence on the part of HYTX or its coaches.
The liability of HYTX is in any case limited to the amount covered by its insurance, or in the absence thereof, to the amount of the last invoiced plan.
13. Force majeure
Force majeure includes, among other things: serious illness or accident of the athlete, death of a close family member, or other circumstances beyond the athlete's control that reasonably make the continuation of the plan impossible.
Pausing the contract due to an injury is regulated exclusively via article 9; for other cases of force majeure the athlete can always present this to Marvin, who assesses on a case-by-case basis whether a concession is possible.
HYTX is likewise not liable for the failure to fulfil its obligations, or not fulfilling them in time or properly, as a result of force majeure on its side (e.g. closure of infrastructure, illness of a coach, government measures).
14. Intellectual property
All training plans, methods, analyses and materials provided by HYTX remain the property of HYTX and are intended exclusively for personal use by the athlete. Distribution, resale or commercial use without prior written permission from HYTX is not permitted.
15. Processing of personal data
HYTX processes the athlete's personal data in accordance with the applicable privacy legislation (GDPR) and exclusively with a view to the performance of the agreement, customer management and, subject to consent, communication about new services. More information about this can be found in the privacy statement on hytx.be.
16. Complaints
Complaints about the services must be reported to HYTX in writing and with reasons within 14 days of the incident, via hello@hytx.be. HYTX commits to responding within a reasonable period and to seeking a solution together with the athlete.
17. Amendment of the terms and conditions
HYTX reserves the right to amend these terms and conditions. Changes are communicated via the website and/or by email, and do not apply retroactively to annual contracts already running, except where this is legally required.
18. Applicable law and competent court
Belgian law applies exclusively to all agreements between HYTX and the athlete. In the event of a dispute, only the courts of the judicial district of Antwerp are competent, without prejudice to the possibility for the consumer to turn to the competent consumer desk or the mediation service.
HYTX – hytx.be – hello@hytx.be