Summer workouts often feel tougher than those in cooler months. You might notice your strength dipping, your endurance fading, or your motivation waning. This is a common experience, and it happens for several reasons tied to how your body reacts to heat and humidity. Understanding why you feel weaker during summer workouts can help you adjust your routine and maintain your energy levels. Runner taking a break on a sunny summer trail Why Summer Heat Affects Your Workout Stren