From straddle sit:
Hands grasp legs behind knees (maintain this shape throughout skill).
Pull knee to ear (e.g. R knee to R ear) to initiate rolling action.
Roll sideways across back and shoulders.
End in straddle sit facing in the opposite direction from start.
Maintain body tension and straight legs in a pike straddle throughout.
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.