Whether or not one should wear underwear with activewear depends on personal preference and the type of activewear being worn. Some activewear is designed with built-in liners or pads specifically made for moisture management and support, eliminating the need for separate underwear. In such cases, wearing additional undergarments may cause unnecessary bulkiness or discomfort. However, if your activewear lacks built-in features or you simply feel more comfortable wearing an extra layer of protection underneath, then wearing underwear is perfectly acceptable and often preferred by many individuals as it provides an added sense of security during physical activities. Ultimately, it's important to prioritize your comfort and hygiene when deciding whether to wear underwear with your activewear.