Place your finger in the middle of the back of your partner and try and keep it there.
The partner then walks around changing direction, stopping, starting and side-stepping etc.
After about 30 seconds change who is leading. If there is an odd number of players there will need to be one group working as a 3. They just form a 3 in a line and the front person leads.
The person following should have bent knees and be in a ready position so as to be able to change direction at any time.
World Rugby has reportedly conceded Aaron Smith's disallowed try in the World Cup final should have stood.
"It is not only useful for staff who are experienced but a valuable tool for those subject staff who have to take teams."
The variety of sessions across sports - sometimes we steal session ideas from one sport and use them with another.