| http://www.w3.org/ns/prov#value | - hich muscles can be strengthened to alleviate specific problems such as back pain or achy knees.Improve your balance.Exercise safely, even with arthritis, osteoporosis, or if you are over 65 years old.Learn about nutrition, motivation, and how to design your own work-out.Follow extended exercise programs, including sessions for exercise on the road, a 15-minute work-out, and one to protect and str
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