MY TOP WINTER RUNNING TIPS AS A 15:21 5K RUNNER ❄️🏃‍♂️ 1. Layer Like a Scientist, Not a Snowman Moisture-wicking base → thermal mid → windproof shell. Avoid cotton—it traps sweat and increases cooling rate. 2. Prime Your Muscles Before You Step Outside Do a 6–8 min indoor warm-up (band activation light strides) to increase muscle temperature and reduce stiffness-related injury risk. 3. Protect Extremities for Performance Gloves and headbands reduce heat loss—25–30% of heat escapes through the h