The player lays on the ground while keeping legs on gymnastic ball. The player performs regular crunches making sure that the whole motion uses only core muscles.
Modern tennis is based on power so it is important to try to develop powerful strokes. Serve, return and forehand come to mind because these 3 strokes provide the best opportunities to dominate the opponent. There are 2 ways to improve power: by working on technical aspects or by getting stronger physically. Core muscles are used in all strokes in tennis so players should do core exercises regularly to make sure that they are ready for tennis demands.
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."