It might shield your private areas from the nauseating agony caused by impact. Wearing proper athletic attire while running will help you avoid embarrassment and potential medical issues related to body odor and heat rash. The American Heart Association recommends that you wear tight-fitting clothing when exercising. This will increase the blood flow to your muscles and reduce your risk of experiencing heartburn, muscle cramps, and other problems associated with low blood flow to the legs. Running shorts are the most common type of athletic garment used by runners. They're comfortable to wear and allow you to move your limbs freely. However, not all types of shorts are made alike. There are two main types of running shorts: loose-fitting and tight-fitting. Loose-fitting shorts are designed to hug the body's contours without constricting movement. They provide adequate support but don't restrict breathing or skin circulation. These shorts are best for people who want to maintain an active lifestyle but can't handle the discomfort of tight shorts. Tight-fitting shorts are made of breathable material and fit closely against the body. They may include special panels that push up toward the chest or waist to improve posture and appearance.