Generally speaking, a vigorous exercise programs entails an ...

[Brittanyd9008]

Generally speaking, a vigorous exercise programs entails an intensity level above ____ percent of maximal capacity.
 A) 20
  B) 40
  C) 60
  D) 80
  E) 100

Question 2

To develop the CR system, the heart muscle has to be ____ like any other muscle in the human body.
 A) massaged
  B) overloaded
  C) reevaluated
  D) examined
  E) activated

[SVictor]

Answer to Question 1

C

Answer to Question 2

B