Your lower body, which includes your hips, your knees, and your feet, can experience pain, and this will affect your daily routine. Exercise might seem like the last thing on your mind, and that includes walking. But you aren't the only one. Achilles tendonitis and plantar fasciitis are common foot conditions. Also, about 15% to 25% of folks in the US experience knee pain too, which is the second most common type of chronic pain. But physical therapy exercises can help you relive some of that discomfort. And you want to know what the best part of it is? These simple exercises can be done at home and don't take much time at all.