Will has also lifted the lid on his fears ahead of dancing in front of millions every week, as well as all the midweek rehearsals.
He told various media outlets: “If [my knees] pop out in the middle of a dance routine live on telly, there’s not much I can do because I will just hit the floor.
“They’ve popped out while I’ve been walking down the stairs, before now. So as long as that stays, then whatever will be will be.
“But I just want to make it through the journey. I don’t want to go out with injury, it’d kill me because I think I feel like I’d have the experience.”
Strictly Come Dancing returns on Friday, September 22, on BBC One and BBC iPlayer.