An elderly woman wants to begin an exercise program to keep herself healthy. What would you advise?
a. It is too late to begin a program if she has not been exercising previously
b. She should aim for 150 minutes or whatever she can safely perform each week
c. She should limit exercise to seated, upper-body workouts so she doesn't elevate her heart rate
d. She needs to avoid weight-bearing exercise if she has lost bone density
e. Resistance training may accelerate muscle loss and should be limited