Warming up is important before exercising
a. decrease intensity
b. prevent injury
c. strengthen muscles
d. improve performance

The maximum blood pressure in the upper arm of a healthy person is about 120 mmhg. if a vertical tube open to the atmosphere is connected to the vein in the arm of the person, determine how high the blood will rise in the tube. take the density of the blood to be 1040 kg/m3.

The body uses fight or flight as a way of defending itself from stress. question 2 options: true false

Which is not a physical sign of stress? a )pupils dilate b) breathing becomes faster and deeper c) kidneys and liver constrict d) spending money