The trio have the chance to win waffles and toppings for the house if they show BB what they're made of in the Diary Room.
The three piece will each be called in turn to the Diary Room tackle a unique challenge before having to complete it a second time.
To pass, the three must set a new personal record with their second attempt by beating the results of their first effort.
Winston will have to eat as many chillis as he can in a minute.
Mark will have to affix as many clothes pegs to his face as he can in a minute.
And finally, Kimberly will have to gab balls out of gunge using her mouth, also with a minute to collect the most balls.
If they pass, the group will get the promised waffles and toppings.