In a drop step, one leg moves first then the turn of the body.
With a drop step you are trying to get one foot past the defenders foot, the body and the foot move at the same 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.