You will need to do this in partners.
One partner stands hugging the ball, knees bent holding core muscles TIGHT THROUGHOUT! Whilst the other partner slaps the ball in all directions as hard as possible, for up to around 20 - 30 slaps and then change. It's a great laugh. One tip though.... it's handy if both partners are around the same height. Secondly you can also do the slap whilst one partner is lying in the bridge position on top of the ball, you know, shoulders across the ball the rest of the body in a straight line, holding core muscles tight. At the same time hugging the ball whilst the other partner slaps. (With this postion you can have partners of different heights)
I have only been teaching for 10 months but I find this site an absolute must and really enjoying keeping up with all the new ideas. Please feel free to email me as there seems to be a very few of us here in the UK that use the site.
Take care everyone,
Best wishes, Linda.