The term yardstick refers to what is a normal response. It really has nothing to do with a yardstick and can be used in many situations. A yardstick is a measurement that has been tested over and over and than that measurement becomes the standard.
Say the yardstick for a reaction time is 5 seconds
Meaning that is what a normal healthy person can do it in.
Joan has the reaction in 4.8 second. Well she is on the the bell curve and did better than the yardstick test measure.
https://humanbodyanatomy.co/parts-of-the-body-anatomy/parts-of-the-body-anatomy-anterior-and-posterior-parts-of-the-body-anatomy-human-anatomy-chart/
this link has a picture with the posterior region.
Mental: self esteem is good and you feel confident
Social: meet new people if you go to a gym, can hang with your friends if you exercise with them
Spiritual: you feel like you belong
Physical: physically fit and a good body weight
Emotional: feel good aboit your emotions because you have good mental health
The last one because empathy is when you feel bad for another person.
