Replace worn-out shoes to prevent injury

All walking shoes eventually show signs of wear. And even if they still feel comfortable and don't show much outer wear, they might not be providing enough support or shock absorption.

Change your shoes when:

• The outsole is worn
• You've reached 300 to 400 miles of running or walking in your current pair

Even if a shoe looks good, most lose their impact protection after around 300 to 400 miles. Put a mark on the calendar when you've reached your shoes' maximum mileage to remind yourself to replace them, and to track how long it typically takes you to put in 300 to 400 miles.