It's important to respect any medical conditions or physical limitations you have and select a workout routine that accommodates them. Ignoring a heart condition or joint disease during exercise, for example, can backfire and make your condition worse. Most physicians encourage exercise as a way to manage many chronic conditions and will work with you to set up a program that is right for you. If you have any health issues, talk with your doctor or work with a qualified personal trainer to make sure your workout is helping and not hurting you. Ignoring a health condition when you exercise doesn't make it go away, but it could make it worse.