Lie on your back.
Raise your head a bit and move your left elbow to your left knee and move your right leg to your right knee.
Variations:
Left elbow to right knee and right elbow to left knee.
Do this drill after a good warming-up.
Work with series and repetitions.
Don't overload your players!
Start with lighter series, less repetitions and less seconds.
e.g.
1. 12-14 year olds: 3 series of 10 repetitions.
2. older players: 3 series of 20 repetitions.
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.