Hi there,
Thank you for the sharing!
Gesture/Body language contribute to 55% of your communication. 38% by tonality and 7% by words.
Therefore gesture is important to deliver your presentation, or your messages across to your partner effectively.
People understand and learn things via 3 main channel and that is visual (seeing), auditory (listening), and kinaesthetic (touching). the other 2 were taste and smell.
Therefore, if we want to communicate well with others, creating good impression, getting girl friend, become successful in every aspect of your life, we need to learn how to communicate well with the combination of body language, tonality and then words.
Hope this helps.
Cheers!