Mixed messages- when you say one thing but your body/body language says something else or vice versa or one you say something but the other person looks at it at a different way. It misleads them.
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A, because if you know about hygiene, you can help prevent the flu. Ex: educating younger kids to always wash your hands after touching anything dirty, after using the restroom, and before eating.
It mean that u can design a strength -training (or weight training ) program without knowing two term :rep and set )
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Refers to human development that is meant to involve all the parts of a person.