There is usually a significant loss in the metabolism rate and this effects the muscle mass which inadvertently eventually turns into inert depot fat. The slowed cellular metabolism rate would require a more controlled intake of food, if the body fat content is not to be increased further.
With the inclusion and presence of a consistent exercise regimen as part of the daily lifestyle, the individual has a better chance of maintaining an ideal body mass and weight.
The food intake of the aged individual may also lack the nutrients and particularly the calcium intake and here the presence of some form of physical exercising will help to ensure the said individual adds supplements and other important nutrients in the form of dietary supplements to ensure overall better body functioning systems.
An exercise training program that would be most suited for the aged would have to take into account the now more fragile state of the body condition, thus content of the exercise regimen should not be too overwhelming and demanding physically and mentally.
Having a good and consistent exercise routine has been shown to not only keep diseases away but has also shown to be instrumental in keeping the individual healthier both physically and mentally.