Dylan Gee 🇬🇧🇳🇿 on Instagram: "Improve your balance & stability on your tennis serve ✅ The tennis serve is a very complex motion and this exercise helps to break down the complexities of the motion. #tennis #tennisserve #tennisplayer #tenniscoach #tennistips #tennistime #tennisfun #tennislove #tennisplaying #tenniswithdylan #tennis🎾"