Knee Pain After Running: Where It Hurts, What It Means, What to Do
Where your knee hurts points to the likely cause. Learn the warning signs, a pain-guided way to keep running, and the training and strength changes that help.
Injury Prevention
Runner's Toe: How to Treat and Prevent a Black Toenail From Running
Why toenails turn black from running, what to do about a sore or loose nail, when to see a doctor, how long it takes to grow out, and how to prevent it.
Why Does My Lower Back Hurt When I Run? What to Do Next
Lower-back pain during a run has more than one possible explanation. Compare recent changes, choose a cautious next step, and know when to seek medical care.
Chafing From Running: Why It Happens and How to Stop It
Find what's rubbing, protect your usual trouble spots, and stop when your skin starts to hurt. Practical prevention and care for running-related chafing.
Runner's Itch: Why It Happens and How to Stop It
Why runner's itch happens, how long it usually lasts, what helps, and how to tell it apart from hives, heat rash and the rare reaction that needs emergency care.
Why Do My Legs Feel Heavy When I Run? Causes and How to Fix It
Training load, fuel, heat, sleep or something medical? Use the timing of your heavy legs to find the likely cause, a fix for your next run and the warning signs.
Why Do My Ears Hurt When I Run? 12 Causes and How to Fix Each One
Cold wind, a clenched jaw, your earbuds or something else? Here are 12 causes of ear pain when you run, what to try for each, and when to see a doctor.
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