According to Osho, there is no secret to expressive hand movements—they arise spontaneously from one’s nature and long-formed habits, a cultural flavor rather than a technique. Real communication uses the whole being; when speech is alive, the hands follow. Don’t practice gestures or force them; relax into authenticity and let your own body-language emerge effortlessly.
There’s no trick—hands move because it’s natural habit, so let them move naturally when you talk.