The whole group walks around the yellow lines of the field in a line.
When the trainer calls 'yes', the person at the back of the line starts to run in front of the line as fast as possible.
The children do this by pulling a sprint.
Options:
The children run after each other around the yellow lines in a line.
The person at the front of the line can do what he wants for example: heels buttocks, sprinting, lifting knees etc.
When the trainer calls 'yes' the person at the back of the row starts to walk as fast as possible to the front of the row and can choose what he wants to do. It must be something other than normal running/jogging, it may be sprinting.