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Health and safety
Miles & Iron is general fitness education for healthy adults. It isn’t medical advice. Please read this before you train.
Call emergency services (911 in the US) right away for chest pain or pressure, fainting, severe or unusual shortness of breath, a racing or irregular heartbeat, sudden severe headache, sudden numbness or weakness, or confusion, vomiting or no sweating in the heat.
Before you start
- See your doctor before starting if you have a heart condition, high blood pressure, diabetes or another long-term condition, take prescription medicine for one, are pregnant or recently gave birth, or answered yes to anything in the app’s health check.
- If the health check flags something, the plan runs in cautious mode: no heavy top sets, intervals or time trials until a doctor clears you.
Stop and get checked
- Dark, cola-colored urine with severe muscle pain or swelling after training. Get urgent care the same day.
- Back pain with numbness, weakness, or loss of bowel or bladder control. Get urgent care.
- Pain that is sharp, gets worse each session, hurts at night or follows a fall.
- Pinpoint bone pain in the shin or foot that worsens with each run.
- Joint pain above 3 out of 10 that lasts more than 3 days.
- Unexplained weight loss, fever with joint pain, or missed periods.
Food and body weight
- Calorie targets are optional, never drop below your estimated resting needs, and never aim for more than 1% of body weight lost a week.
- If you have, or have had, an eating disorder, the app gives fueling tips only, with no numbers. The National Alliance for Eating Disorders helpline is (866) 662-1235, weekdays.
- If you take medication for weight, diabetes or blood pressure, check with your prescriber before changing how you eat or train.
Heat, cold and dark
- In heat, run by effort, carry fluids and electrolytes on runs over an hour, and stop for dizziness, chills or confusion.
- In the dark, wear a headlamp and reflective gear and choose lit routes.
Supplements
The app mentions creatine monohydrate as optional. Check with your doctor or pharmacist first if you have kidney problems or take medication. If you compete in tested sport, use third-party tested products only.