It doesn't have to be hard to be beneficial. You have to sweat to benefit. Physical activity is risky for persons with a disability. It is especially important for them to be involved to reap the many benefits of physical activity. Older adults should avoid physical activity.
Physical activity keeps their joints mobile, and their muscles and heart strong.
It will also help them maintain their independence in the later years. Get a copy of Canada's Physical Activity Guide to Healthy Active Living for Older Adults. Weight training makes you look like a body builder. A basic weight-training program will not make your muscles big and bulky. Good programs can be designed for all ages and abilities to improve muscle tone, strength, and help with weight control.