Disclaimer

Nebula publishes general educational material about athletic development. No article creates a clinician-patient, coach-athlete or fiduciary relationship. The information is written for adults and should be considered alongside personal history, current symptoms, professional advice and the conditions in which training actually occurs.

This disclaimer applies to every article, glossary entry, research note and event listing published by Nebula in 2026. It exists so that a reader can see plainly what the publication is and what it is not. For instance, an article on cardiovascular stamina for adults over 35 describes common concepts such as aerobic base and heart-rate zones, but it cannot account for an individual reader's history. A reader who is unsure whether a page applies to them should treat the content as background reading and raise questions with a qualified professional. The disclaimer also covers material shared by contributors, guest writers and event speakers, because their views are their own and do not replace professional judgement. Nebula does not collect health records from readers and does not ask for them, so the desk has no way of tailoring a page to a person. Readers under 18 are advised to read with a parent or guardian and to leave training decisions to a qualified adult.

1. No diagnosis

Descriptions of physiology are not diagnoses. Nebula cannot assess a reader through a screen, and no statement should be read as confirmation that exercise is safe for a particular condition.

Edge cases matter here: a reader with a past heart event, high blood pressure, joint surgery or a long-term condition may find that a general description does not fit at all. The absence of a warning in an article is not evidence that an activity is suitable. Nebula contributors do not offer individual interpretation of symptoms, test results or scans through contact.php, and the desk will redirect such questions to local health services. Examples of material that is outside the scope of the desk include reading an electrocardiogram, interpreting a blood test and judging whether a pain is related to a past injury. Where a reader shares such details in a message, the desk will reply in general terms and encourage a visit to a clinic, a community health centre (Puskesmas) or a hospital. Information a reader provides is handled as described in the privacy policy and is not used to form a view about the reader's health.

2. No promise

Training responses vary. We do not promise a result, timeline, body composition change or performance outcome, and we avoid language that suggests one routine fits every person.

Age, sleep, workload, previous training, climate and stress all influence how a person responds to exercise. In a humid city such as Jakarta, for example, the same session can feel quite different between early morning and midday. Examples in articles are illustrations of a principle and not targets that a reader is expected to reach. Any figure, such as a heart-rate range or a weekly volume, is a general reference point that a qualified professional may adjust. Readers who compare themselves with an example in an article may draw a wrong conclusion, since the example describes one situation and one set of conditions. A slower improvement than described does not mean that a reader is doing something wrong, and a faster one does not mean the pace is suitable to maintain. The desk therefore avoids ranking readers against each other and does not publish league tables or leaderboards.

3. Professional review

Speak with an appropriate qualified professional before changing exercise after a long break, illness, injury or major medical event. A professional can adapt a plan to history and risk.

Suitable professionals may include a physician, a sports-medicine clinician, a physiotherapist or a certified strength and conditioning coach, depending on the question. A reader returning after a break of more than a few months, or after an illness, is encouraged to arrange a review before increasing intensity. Where a professional gives advice that differs from an article, the professional's advice should take priority because it is based on the reader's actual circumstances. Readers can check a professional's registration with the relevant Indonesian body, such as the national medical or physiotherapy association, before booking an appointment. A review before a change in exercise is particularly relevant after any of the following:

• (a) a diagnosis of a heart, lung, kidney or metabolic condition;
• (b) surgery or a fracture during the previous 12 months;
• (c) pregnancy of a household member who trains together with the reader, if shared sessions are planned;
• (d) the start or change of a regular medicine that could affect heart rate or hydration.

4. Symptoms

Stop and seek urgent local help for serious or unusual symptoms. Nebula is not an emergency service and cannot monitor a session or respond in real time.

Serious or unusual symptoms include chest pain or pressure, fainting, severe breathlessness, sudden weakness on one side of the body, confusion and persistent severe pain. In Indonesia, the national emergency number is 112, and a reader can also go directly to the nearest hospital emergency department. Sending a message to Nebula is not a substitute for these steps, because the desk does not operate outside office hours and cannot respond immediately. A reader who trains alone is encouraged to carry a phone, tell someone the planned route and avoid the hottest part of the day. If another person is present, that person can be asked to call for help while the session is stopped. After an episode, a reader should seek an assessment before returning to the same activity, and should not rely on a website to decide when that is safe.

5. Food

Nutrition writing is informational and does not replace a dietitian or clinician. Allergies, medicines, cultural practice and medical conditions can change what is appropriate.

Food articles describe general patterns, such as the role of protein, carbohydrate, fluids and electrolytes around training, and they use everyday Indonesian foods as examples where helpful. They do not recommend any specific product, supplement or dose. Readers with diabetes, kidney disease, food allergies or who take regular medicines should obtain individual guidance before changing what they eat. Religious fasting and local custom can also change what is practical, and a dietitian can adapt advice accordingly. Where an article mentions a food or a drink, it does so to explain a general idea and not to endorse a brand, a quantity or a schedule. Product labels, local food-safety rules and the guidance of the Indonesian food and drug authority (BPOM) are better sources than a general article for questions about a specific product. Readers who are pregnant, older or managing a long-term condition may have needs that differ from those described.

6. Sources

Research notes explain selected evidence but cannot represent every study. Readers should inspect methods, populations and limitations rather than treating a citation as a universal answer.

Useful questions for a reader to ask include who took part in a study, how long it lasted, whether participants resembled the reader in age and training history, and whether the result has been repeated by other groups. A small study of young volunteers, for example, may say little about men over 35 with a desk job. Nebula tries to state such limits, but a note in an article is a summary and not a replacement for reading the original paper. Findings can also change as new work appears, so an article is dated and reviewed at least once a year. A reader who notices a more recent study that contradicts a note can send the reference through contact.php. The desk will compare the two, and where the newer evidence is stronger, it will update the page with a dated note.

7. External links

Nebula is not responsible for linked services, their availability, claims or privacy practices. A link is provided for context, not as a guarantee.

External sites may change their content, move pages or alter their privacy practices without informing Nebula. A reader who follows a link should check that site's own terms and privacy notice. If a linked page appears to make claims that conflict with the principles described here, the reader can report it and the desk will consider whether the link should remain. Links are reviewed at least once a year, and links to government bodies, universities and professional associations are given priority. A broken link is replaced where a suitable alternative exists, or it is removed and the article is updated accordingly. Nebula does not receive payment for including a link and does not track which links a reader follows.

8. Corrections

Report a material factual concern using contact.php. The desk aims to review it within 30 days and will amend the page when evidence supports a correction. A report that includes the page address, the sentence concerned and a reference is easier to assess, though a report without these details will still be read. Where a correction changes how a statement should be understood, a dated note is added to the page, and a minor wording fix is made without a note. The person who raised the concern is told of the outcome if contact details were provided.

9. Jurisdiction

Nebula operates from Jakarta, Indonesia. This disclaimer is interpreted consistently with applicable Indonesian law and mandatory protections that cannot be waived. This includes the Consumer Protection Law (Law No. 8 of 1999), whose rules apply even where a disclaimer would otherwise limit responsibility. A reader outside Indonesia keeps the rights that apply in the place of residence, and this notice does not remove them. If any part of the disclaimer is held to be unenforceable, the other parts remain in effect.

10. Revision history

This disclaimer was published on 1 January 2026 and reviewed on 1 October 2026. The current date is shown so readers can distinguish this notice from older copies.

In practice, a correction request should name the page, quote the sentence concerned and point to the evidence the reader relies on. The desk acknowledges receipt within 7 business days, records the outcome and, where a change is made, adds a dated note to the page. Requests can be sent through contact.php, by post to Jalan Cendrawasih No. 45, Duren Sawit, Jakarta Timur 13440, Indonesia, or by telephone on +62 856 9317 4825. This disclaimer was published on 1 January 2026 and reviewed on 1 October 2026; any later change will be dated at the top of the page and will not apply retroactively to material read earlier. The dated entries to date are:

• (a) 1 January 2026: first publication of the disclaimer;
• (b) 1 October 2026: review of the symptom, nutrition and external-link wording, with added detail on correction handling.