A tight illiopsoas is common among individuals with sedentary lifestyles. Many people with tight hip flexors will have sore backs with excessive lordosis, and the Thomas Test can actually serve as a good stretch for the illiopsoas. Another good stretch is a modified low lunge—have the client perform an extended lunge with the back knee and shin touching the ground. Arching the back a small amount will add to the stretch, while bending at the waist will reduce it. Similar to the low lunge is the yoga position known as "pigeon pose," in which the front leg is turned outward with the lateral surface of the shin touching the ground. The Thomas Test is a quick and easy way to test the flexibility of three critical muscles of the hip. Before assessing your client, be sure to ask if they have a sore or injured back. If they answer yes, do not have them perform this test.