ChewySinew is a training app, not medical advice. It helps you plan and log resistance training and gives general guidance on effort, rest and food. It does not diagnose, treat or monitor any medical condition, and nothing it shows you is a substitute for a doctor.

Before you start. Talk to your doctor before beginning or changing an exercise program if you have a medical condition, take regular medication, are pregnant, are recovering from an injury or surgery, or answered yes to any of the health screening questions in this app. The app asks those questions so it can choose safer exercises and rep ranges; it changes nothing about your medical care.

While you train. Stop immediately and seek medical help if you feel chest pain or pressure, pain spreading to your arm, jaw or back, faintness or dizziness, unusual breathlessness, a sudden severe headache, or a sudden pop, tear or sharp pain. In Australia call 000. If a blood-pressure reading you enter is 180 over 110 or above, the app will tell you not to train that day and to see a doctor; that is a prompt to get advice, not an assessment of you.

The suggestions are guidance. Loads, reps in reserve, rest, the calorie band and every other number the app shows are starting points calculated from what you logged. You can change any of them on the screen where they appear. Pain scores you enter make the app more cautious; they never make it diagnose anything.

Your responsibility. Resistance training carries inherent risks, including injury. You are responsible for using equipment safely, warming up, and staying within what you can control. If something hurts, stop.

Nutrition. The calorie and protein figures are estimates for a healthy adult adjusting body weight through training and food. They are not a prescription. If you have a condition affected by diet, or take medication that interacts with food or weight change, follow your doctor's or dietitian's advice over the app's.