indicate no pain. a ten would be excruciating. if your pain is around the 2-4 it is generally safe to continue exercising. if your pain is a 5 or above you should talk to your doctor to see if you should continue or change your routine.
take it slow. it is recommended that you get at least 30 minutes of exercise a day 5 days a week. try not to take two days off in a row. take walking for example. if 30 minutes of walking proves to be too much for you to handle, break it up. try walking for 10 minutes 3 times a day. as your body gets 