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

well say a good goal is to do 150 sit ups in a week! or 90 pull ups a day. even 60 push ups in a month these are all fair goals!

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.