To improve your fitness level, you must...

Select one:

Time left $0$:$08$:$11$

a$.$ Exercise when you have time

b$.$ Exercise two to three times per week

c$.$ Exercise for just $15$ minutes, four times per week

d$.$ Exercise five to six times per week

Clear my choice

Which is a purpose of warming up$?$

Select one:

a$.$ Reduces the likelihood of lightheadedness

b$.$ Increases blood flow to the muscles

c$.$ Slowly decreases the heart rate

d$.$ Prevent blood pressure from dropping rapidly