Medical & Training Disclaimer

Last updated: September 18, 2026

Read this first. This site is educational information made by a competitive swimmer, not medical advice. It is not a substitute for your coach, your doctor, a physical therapist, or a registered dietitian. If something on this site conflicts with what your coach or a medical professional tells you, follow them, not this site.

1. Not medical advice

Tidelyne publishes general information about swimming technique, training, nutrition, recovery, mental performance, and injury prevention. None of it is a diagnosis, a treatment plan, or personalized medical or dietetic advice. No doctor–patient or clinician–client relationship is created by using this site.

2. Talk to a professional before you act on this

Speak with a qualified professional before starting or changing any training program, before acting on any nutrition, hydration, caffeine, or supplement information, and before treating or training through any pain or injury. Get help immediately if you experience chest pain, breathing difficulty, dizziness, fainting, or any symptom that worries you.

3. Water safety

Never swim alone, and never practice underwater or breath-holding work without qualified supervision. Hyperventilating before an underwater swim can cause shallow water blackout, which can happen with no warning and can be fatal.
Underwater and breath-hold sets on this site describe normal supervised training only. They are not instructions for unsupervised apnea training.
Follow the rules of your pool and the instructions of the lifeguards and coaches on deck.

4. Younger swimmers

If you are under 18, do not change your training, diet, or injury management based on this site without talking to a parent or guardian and your coach. Growth-age athletes have different loading, recovery, and nutrition needs than adults, and information written for senior swimmers may not be appropriate for you.

5. Eating and body image

Nutrition content here is about fueling performance. It is not a weight-loss program and must not be used to restrict eating. If you are worried about your relationship with food or your body, please talk to a trusted adult or a health professional. In the U.S., the National Alliance for Eating Disorders (opens in a new tab) helpline can help you find support.

6. AI-generated content

Some parts of this site (the AI coach, generated workouts, AI technique analysis, and AI 3D reconstruction) are produced by an AI language model. AI can be confidently wrong. Treat everything it produces as a starting point to check with a coach — never as a medical, safety, or competition-rules authority. Do not enter personal health information into it.

7. Numbers, standards and calculators

Heart-rate, lactate, pace, and stroke-rate figures are typical published ranges used for teaching, not measurements of you. The 3D visualizer's force and velocity values are illustrative teaching approximations, not measured data. Pool-format conversions are approximations for training reference and are not the official USA Swimming conversion factors — use the official source for anything involving cuts, entries, or seeding. Meet dates and qualifying standards change; always confirm with usaswimming.org (opens in a new tab).

8. No warranty; use at your own risk

This site is provided "as is", without warranty of any kind. To the maximum extent permitted by law, the site owner is not liable for any injury, loss, or damage arising from use of, or reliance on, anything published here. You use this information at your own risk.

9. Contact

Tidelyne is operated by Scarpline. Questions about this disclaimer: danielswims101@gmail.com