Medical Disclaimer

Lura reads the numbers you give it and applies training rules to them. It has never met you, it cannot examine you, and it does not know your medical history beyond what you typed in. The plans, tips and observations it produces are general fitness suggestions, and they are not a substitute for advice from a doctor, physiotherapist, nutritionist or any other qualified professional.

Never disregard professional medical advice, or delay seeking it, because of something you read in Lura. If a professional tells you something different from what the app suggests, follow the professional.

This is the most important sentence in this document. Lura predicts when your next period may start so it can plan your training. It does not identify fertile days, it does not track ovulation for the purpose of conception or avoidance, and it must never be used to prevent or achieve pregnancy.

Cycle predictions are statistical estimates based on your own history. They are often wrong by days, they are much less reliable if your cycles are irregular, and they say nothing about whether you can conceive on a given day. For contraception, talk to a healthcare professional.

Everything Lura says about your cycle phase is an estimate calculated from the dates you entered. It gets better as you record more cycles, and it degrades when cycles are irregular, when you are on hormonal contraception, or after a change such as pregnancy, postpartum or perimenopause.

The evidence linking menstrual cycle phase to athletic performance is genuinely mixed, and effects at the group level are small. Lura treats cycle phase as a way to adapt training to how you report feeling, not as a law of physiology. If the app's read of your phase does not match your experience, your experience is the better source.

Lura may tell you that your training load and reported energy suggest you could be under-fuelling, that pain you have logged in the same place keeps coming back, or that it is pausing your plan until you confirm you are alright. These are prompts to talk to someone qualified. They are not diagnoses, and the absence of a flag is not a clean bill of health.

Please see a healthcare professional if any of the following is true.

• Your periods have stopped, or become much lighter or less frequent, while you are training.
• You have pain in the same bone or joint that returns when you run, especially in the shin, foot or hip. Pain that localises to a bone and worsens with impact needs assessment, not a lighter week.
• You feel faint, unusually short of breath, or have chest pain or an irregular heartbeat during exercise.
• You are losing weight without intending to, or you are anxious about eating around training.
• You bleed unusually heavily, between periods, or after sex.
• Your mood changes in a way that worries you or the people around you.

If you have chest pain, severe shortness of breath, fainting, or any symptom you think could be an emergency, stop and contact your local emergency service. Do not use Lura to decide whether a symptom is serious.

Get clearance from a healthcare professional before starting or significantly changing a training programme, and particularly if you are pregnant, postpartum or breastfeeding; if you have a heart, lung or metabolic condition, high blood pressure, or a history of bone stress injury or eating disorder; if you take medication that affects your heart rate; or if you are new to exercise and over 40.

Heart rate zones in Lura are estimated from your age or from the numbers you enter. Estimated maximum heart rate is a population average and can be wrong by more than ten beats per minute for an individual. Treat the zones as a guide, and treat how you feel as the real signal.

You are responsible for how you train. You can skip, shorten or ignore any workout Lura suggests, and doing so when your body says to is good practice rather than a failure. Stop if something hurts. To the extent the law allows, we accept no liability for injury or loss arising from training you chose to do, and nothing here limits liability that cannot be limited by law.

Questions about anything here: privacy@runwithlura.com.