When muscles are stiff, they can cause bone and joint pain in the body. When there is tension in the muscles in the leg, this can cause pain in the knees and hips. Exercise helps to strengthen and stretch out muscles. This will help to reduce pain and inflammation. Its like an internal massage for your muscles.
Try these exercises daily to get into the habit of exercising. In the beginning you may even hate doing these. Eventually, you will love it and look forward to exercising. The point of being consistent and doing it daily is to bring more oxygen into the body, get the blood circulating more, lubricate the joints, and stretch out the muscles. Your body will overtime yearn for movement. When you are doing these videos for the second time, feel free to put on music you enjoy, music that gives you life and lifts your spirit. This will make exercise less of a chore and more of a fun party you get to go to daily.