One of the most striking effects of age is the involuntary loss of muscle mass, strength, and function, called sarcopenia. As an older adult, regular physical activity is one of the most important things you can do for your health.
Adults aged 65 and older need*:
• At least 150 minutes a week of moderate intensity activity such as brisk walking or 75 minutes a week of vigorous-intensity activity such as hiking, jogging, or running.
• At least 2 days a week of activities that strengthen muscles.
• Activities to improve balance such as standing on one foot about 3 days a week.
*Aim for the recommended activity level but be as active as one is able
https://www.cdc.gov/phys.../basics/older_adults/index.htm....
Original source can be found here.