To take a neck measurement, place the measuring tape
a. tightly around the center portion of the neck.
b. loosely around the top of the neck, directly below the chin.
c. loosely around the base of the neck.
d. closely around the base of the neck.

To start off a is something you should not even think of doing because you can die, for b that's not a good spot as in there can be extra skin coming from the chin, for c you are getting close but as your neck goes to your torso it gets bigger, D is the correct answer as you would get the most accurate measurement its not to close to the chin or your torso.

More than 600. i'm just guessing

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.