Take any of the 5 Fists. On the inward gathering part of the movement breath in.
Make sure you feel the entire body fill with breath from head to toe.
On the outward movement, exhale with a highly pressurized shhhh sound. Just as the breath filled the entire body the sound should come from the entire body.
The squeezing pressure of the sound will propel you forwards adding power and speed.
Make sure you can do this with all 5 Fists.