That unused eyelet at the top of your running shoe isn’t decorative—it’s a heel lock designed to prevent your foot sliding forward and your toenails turning black. Most runners never use it, which explains why black toenails are so common after long runs and hikes. The fix is surprisingly simple once you know the technique.
You thought 6 a.m. was the safest time to run during a heatwave. A sports medicine consultant’s air quality chart revealed the truth: overnight ozone doesn’t disappear—it lingers, making “clean” morning air far more polluted than you assumed. Here’s what you need to know before your next heat-season workout.
Your running shoes might look perfectly fine on the outside, but the foam cushioning inside is likely already compromised. A podiatrist explains the hidden degradation happening with every footstrike and reveals the simple tests to check if your shoes have passed their peak.
