You can also use what is called the Perceived Exertion Method, a subjective way for you to guess the intensity of your exercise without taking your pulse.

Rating of Perceived Exertion

0     Nothing at all, no intensity
1     Very weak
2     Weak or light intensity
3     Moderate intensity
4     Moderate intensity
5     Strong heavy intensity
6     Strong heavy intensity
7     Very strong
8     Very strong
9     Very strong
10   Extremely strong, strongest intensity

When using the Borg scale, you should rate how hard you feel you are working overall during the cardiovascular session.  For optimal cardiovascular conditioning, most healthy individuals should work between a level 3 and 5.

Special Concerns
****It is important to note that some individuals cannot use any target heart rate method.  Individuals who are taking beta blockers or pregnant women need to use the Borg Scales of Perceived Exertion.

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