Answer:
for cardiovascular:When you feel your pulse, look at your watch and count the number of beats in 15 seconds. Multiply this number by 4 to get your heart rate per minute. Let's say you count 20 beats in 15 seconds. Multiply 20 by 4 for a total of 80 beats a minute.
for respiratory
Set the pointer.
Attach the mouthpiece to the meter.
Sit up or stand up as straight as you can, and take a deep breath.
Close your lips tightly around the mouthpiece.
Breathe out as hard and as fast as you can for 1 or 2 seconds.
Write down the number on the gauge.
Repeat these steps 2 more times.
Step-by-step explanation: