How can you to prevent muscle mass loss as you age?
a. cut back on the amount of calories you eat during the day.
b. lift weights twice a week.
c. you can't prevent muscle mass loss; it's inevitable as you get older.
d. maintain a regular exercise program.

C. You cannot prevent muscle mass loss as you age, however you can slow the rate of muscle loss, and even increase muscle mass in some instances.

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.