Which of the following would decrease total peripheral resistance to blood flow?
a. increasing blood vessel length
b. anemia
c. atherosclerosis
d. vasoconstriction

It would be 23 beats per second

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)