Tennis star Serena Williams has teamed up with mattress brand Tempur-Pedic to star in its new campaign, Tempur-Pedic Sleep Is Power, which aims to demonstrate the importance of sleep in achieving success.

Williams commented 'I require consistent, restful sleep in order to be at my best, and for the past ten years, my Tempur-Pedic bed and pillows have delivered that. This is the only mattress that adapts to my body, relieving pressure points so I sleep deeply and wake up ready to perform on the court and conquer whatever the day might hold'.