Experts agree that the minimum time period for cardiorespiratory benefit from exercise is _______ minutes.
A. 60
B. 20
C. 30
D. 10
1 answer
http://healthyliving.azcentral.com/minimum-time-cardiorespiratory-benefits-8028.html
A. 60
B. 20
C. 30
D. 10
1 answer