No matter what the temperature outside you should always wear lightweight clothing because physical activity generates a lot of body heat?

It is not always advisable to wear lightweight clothing no matter the temperature outside during physical activity as it depends on factors such as the intensity and duration of the activity, personal preferences, weather conditions, and individual thermoregulation. While physical activity does raise body temperatures, proper clothing choices are also necessary to regulate and maintain optimum body heat, prevent overheating or chilling, and ensure comfort and performance.