Frontal Plane – The frontal plane is the left and right movement of the body
To remember what the frontal plane is, recall the following mnemonic:
In karate, if someone comes at you from the front, the best thing to do is step to one side, left or right.
This is the frontal plane below.
The frontal plane is movement from side to side, or left to right.
This can be simplified with directional arrows.