We need our hands and arms to speak fluently. A group of Scottish researchers found that when our arms are restricted we have a difficult time describing or explaining information to others. Gesture and speech production are part of the same integrated system in our brains. We need gestures to produce speech. So get those hands out of your pockets and set down the presentation remote. Use gestures when you present so that your message is more clear and compelling for your audience.
Read the Research: Effects of the Restriction of Hand Gestures on Disfluency by Sheena Finlayson, Victoria Forrest, Robin Lickley & Janet Mackenzie Beck