How to get someone to agree with what you’re saying
When expressing your thoughts or opinions, nodding will make it more likely that the other person will understand and support you. This is due to our established subconscious connection of facts with nodding.
Now, try not to go overboard and rapidly bob your head up and down while you speak. It has to be more subdued, perhaps limited to each statement’s primary point—basically, a verbal emphasis of the core selling points.