Where your body fat is stored is important. It is better to be pear shaped than apple. The more fat above your hips, the more likely you are to get heart disease, suffer a stroke or have diabetes. Even if you are not obese the more fat you have around the waist the greater your chances are for disease.
Aerobic capacity is the best indicator of fitness and funtional capacity. Lab experiments prove aerobic capacity doesn't have to decline with age, IF you are willing to expend the time and effort to maintain it. Older people must exercise regularly over a longer period of time than young adults.
Bone density is effected by diet (low calcium) and a sedentary lifestyle. Older people tend to lose their thirst mechanism and don't drink enough water, becoming dehydrated, which changes their internal temperature. Aerobic exercise helps with kidney function and regulates your internal temperature, helping you not overheat.
A normal 70 year old needs 500 less calories a day than a 25 year old. Too many people eat as though they are 20 years old. Most people should eat about 100 calories less per day per decade. This will help stop wait gain as you age.
In summary; strength training and aerobic exercise is for everyone. It is never too late to start a regular program of exercise. Your muscle mass doesn't have to be replaced by fat as happens to many people.
Next post - a weightlifting routine anyone may find useful.
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