Tai Chi is based on correct posture and proper alignment to make the best use of your whole body.
everydaytaichi by lucy has developed "key words" that she uses to call out as the movements are done
Single Whip
after pushing out in Grasping the Bird's Tail:
Drop your right hand
Pivot your right foot
Cup
Right Hand circles, palm facing you
Look at the tips of your finger as it circles across above your Left hand
Left Hand does the opposite
Cup in the middle
Follow the top right hand as it
Hooks 4 fingers wrap around the thumb in a slight closure, not tight
Left hand advances nearer to your face
Step out with your left foot
Drop your right hand
Pivot your right foot
Cup
Right Hand circles, palm facing you
Look at the tips of your finger as it circles across above your Left hand
Left Hand does the opposite
Cup in the middle
Follow the top right hand as it
Hooks 4 fingers wrap around the thumb in a slight closure, not tight
Left hand advances nearer to your face
Step out with your left foot