Declaration on the duty to inform

(Privacy Policy)

The protection of your personal data is particularly important to us. We therefore process your data exclusively on the basis of the statutory provisions (DSGVO, TKG 2003). In this data protection information we inform you about the most important aspects of data processing within the framework of our website.

Contact us

If you contact us via form on the website or via e-mail, the data you provide will be stored by us for six months for the purpose of processing your enquiry and in the event of follow-up questions. We do not pass on this data without your consent.

Data storage

We would like to point out that the IP data of the connection owner, as well as the name, address, telephone number, e-mail address and credit card number of the buyer, are stored by the web shop operator within the framework of cookies for the purpose of simplifying the purchasing process and for later contract processing.
In addition, the following data will also be stored by us for the purpose of processing the contract: Start date. The data provided by you is necessary for the fulfilment of the contract or for the implementation of pre-contractual measures. Without this data we cannot conclude the contract with you. No data will be transferred to third parties, with the exception of the transfer of credit card data to the processing bank institutes/payment service providers for the purpose of debiting the purchase price, to the transport company/shipping company commissioned by us to deliver the goods and to our tax consultant to fulfil our tax obligations.
The data stored by us will be deleted if the purchase process has been interrupted. If a contract is concluded, all data from the contractual relationship will be stored until the end of the tax retention period (7 years).

The data name, address, purchased goods and date of purchase are stored beyond that going up to the expiration of the product liability (10 years).  Data processing is carried out on the basis of the legal provisions of § 96 Para. 3 TKG and Art. 6 Para. 1 lit a (consent) and/or lit b (necessary for fulfilment of the contract) of the DSGVO.

Apple Health Kit

We use Apple’s HealthKit framework (Apple Inc., 1 Infinite Loop, Cupertino, CA 95014, USA, “Apple”), which provides a central location for health and fitness data on the iPhone and the Apple Watch and with explicit consent allows apps to communicate with the HealthKit Store to access and share this information. With your explicit consent, we process your health data (weight, body size, age, height, if any) obtained through the HealthKit framework to track and display your fasting activities. If you enable the HealthKit framework in your iPhone’s settings, Intermittent Fast may, with your consent, send the health information (weight, body size, age, height) to Apple so you can track and view your fasting activities. The HealthKit framework can be added to new data attributes that are mapped in the product, and you need to agree. At any time, you can prevent Apple from accessing your data and preventing it from being shared by changing your mobile device’s settings. More information about the HealthKit can be found here:


Our website uses cookies. These are small text files that are stored on your device with the help of the browser. They're not doing any harm.
We use cookies to make our website user-friendly. Some cookies remain stored on your device until you delete them. They enable us to recognize your browser on your next visit.
If you do not wish this, you can set your browser so that it informs you about the setting of cookies and you only allow this in individual cases.
If cookies are deactivated, the functionality of our website may be restricted.

Web analysis

Our website uses functions of the web analysis service Google Analytics. Cookies are used for this purpose, which enable an analysis of the use of the website by its users. The information generated in this way is transferred to the provider's server and stored there.
You can prevent this by setting your browser so that no cookies are stored.
We have concluded a corresponding contract with the provider for order data processing.
Your IP address is recorded, but immediately pseudonymized [e.g. by deleting the last 8 bits]. This means that only a rough localization is possible.
The relationship with the web analytics provider is based on standard contract clauses.
Data processing is based on the legal provisions of § 96 Para. 3 TKG and Art. 6 Para. 1 lit a (consent) and/or f (legitimate interest) of the DSGVO.
Our concern in the sense of the DSGVO (authorized interest) is the improvement of our service and our web appearance. Since the privacy of our users is important to us, the user data is pseudonymized.
The user data shall be kept for a period of at least 26 months.


You have the option to subscribe to our newsletter via our website or app. For this purpose, we need your e-mail address and your declaration that you agree to receive the newsletter.
In order to provide you with targeted information, we also collect and process voluntarily provided information on areas of interest, birthday, gender, height, gender, motivation, weight, postal code, address.
You can cancel your subscription to the newsletter at any time. Please click on the "Unsubscribe" link at the bottom of the email. We will then immediately delete your data in connection with the newsletter dispatch.

Your rights

In principle, you are entitled to the rights to information, correction, deletion, restriction, data transferability, revocation and objection. If you believe that the processing of your data violates the data protection law or your data protection claims have otherwise been violated in any way, you can complain to the supervisory authority. In Austria, this is the data protection authority.

You can reach us at the following:

5W Verlag GmbH
August-Bebel-Str. 27
14482 Potsdam, Germany
Phone: +49 331 / 704 356 86

Date: December 2018