BOSTON -- Knee pain is a situation that many people deal with. If this is a new injury or complaint, check with your personal physician to find out if there is a specific exercise prescription that you should be following, or if you need physical therapy. For most people dealing with bad knees there are still many things that you can do.

Walking is one of the best forms of aerobic activity.

If you have access to a gym, or equipment, you can use a treadmill or a stationary bike. Recumbent bikes are also a good choice and are gentler on your knees.

Don't forget weight training. Ask one of the trainers in your facility to help set you up on a leg machine, so that you use correct form and don't put pressure on your knees. Your form and body alignment are important and you need to be careful about activities that have you bend your knees excessively, or have you move in a way that is jarring, twisting or causes impact.

Check out classes that you might enjoy, such as low impact aerobics, sculpting, body conditioning, stretch, pilates, etc. Water workout classes or swimming are also great alternatives.

Listen to your body! If an exercise doesn't feel good and you think it puts pressure on your knees, then don't do it.