Intense enough to cause breathing and heart rate to increase
Vigorous Physical Activity (VPA)
Causes breathing and heart rate to increase to a higher level where it would be difficult to talk
Metabolic Equivalents (METs)
Commonly used to express the intensity of physical activities, ratio of a person's working metabolic rate relative to their resting metabolic rate
Heart or pulse
The number of times your heartbeat per minute, normal heart rate depends on person to person
Pain Cycle
Pain leads to muscular hyperactivity which in turn causes or exacerbates pain, you will feel pain that is so severe that you must rest for a long time to recover
