An example of body language is

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.

fitness healthcare agent

take a break move to stretching and slowly work back into physically exercising if the problem continues go to a doctor or physical therapist