How much exercise does a 56-year-old woman need to lose 50 pounds?

According to Fitwatch and WebMD, an average 56-year-old woman would have to burn off 460 to 500 calories per day to lose 50 pounds in 50 weeks. Using the calculator on ProHealth, an hour of aerobics per day burns sufficient calories to achieve this goal.

Fitwatch provides an online calculator that estimates how many calories need to be burned to lose a goal amount of weight. WebMD states that, on average, a person needs to burn off 500 calories per day to lose 1 pound a week, which is close to the recommendation (460 calories per day) provided by Fitwatch's calculator for a 5'2" tall, 200 pound, 56-year-old woman.