Have you ever noticed that Bruce Lee's attacks are EXPLOSIVE??? Do you know that the real reason behind this deadly explosiveness is the attribute he perfected: NON-TELEGRAPHIC MOVEMENT.

The idea of non telegraphing is to attack without any forewarning movements. If you punch with just a slight motion of your feet or body, you have “telegraphed” or warned your opponent of your intention. There are no preparatory short movements for an attack. The key is that one must keep one's body and arms loose, weaving one's arms slightly and only becoming tense upon impact. Lee wanted no wind-up movements or "get ready poses" to prelude any attacks. Lee explained that any twitches or slight movements before striking should be avoided as they will give the opponent signs or hints as to what is being planned and then they will be able to strike first while one is preparing an attack.

This video demonstrates how Bruce Lee used to execute his movements without telegraphing.