Answer:
The forms of behaviour used in body language include body posture, gestures, facial expressions, and eye movements. Body language may provide clues as to the attitude or state of mind of a person. For example, it may indicate aggression, attentiveness, boredom, a relaxed state, pleasure, amusement, and intoxication.
I hope this helps you.
The strength of your trunk or (core )including abdominal, low back, and postural muscles.
A smile! It's great to see different smiles from everywhere in the world and it's joyous all around to see positivity, and everyone having the same basis of expression no matter where they're from. :) Hope this helps!