text: Jogging is a form of aerobic exercise in which you maintain a running speed under 6mph. Jogging can also help you improve your heart health and immune system and maintains flexibility as you age. Blisters is a small bubble on the skin filled with serum and caused by friction, burning or other damage. Blisters happen due to too tight shoes. If your shoes are too tight, you will get blisters on your feet after jogging.