Intensity: the more intense a stimulus is (strength of stimulus) the more likely you are to give attention resources to it.
Size: the bigger a stimulus is the more attention resources it captures.
Movement: moving stimuli capture more attention that ones that remain static.
Answer:
because it gives common language for reporting and monitoring diseases
It mean that u can design a strength -training (or weight training ) program without knowing two term :rep and set )
Hope this help you
By exercising than have a healthy diet