Virgin Active is currently trialling the Drone-ovic, the world's only drone that helps tennis players to improve their serve.
The drone is designed to drop tennis balls from high up so that players can practise their swings and smashes in a way that they wouldn't be able to with the simple ball machine.
It has a 4k camera so coaches can review those techniques.
The drone aims to improve players' technique and agility, but you'll have to travel to Northwood to try it.
You'll become the next Serena Williams in no time with this.