Players lay flat on their back, supported with one leg balanced on a ball.
Then, keeping their hips high, they have to bend and straighten their free leg while the opposite leg stays balanced on the ball.
In this drill the abdominal muscles and leg muscles are strengthened.
This will help build a player's core strength which is needed to develop better balance.
Create a resolution to develop your coaching confidence by seizing the opportunity to discover new drills, turn ideas into action and seek advice from the coaching community.
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."