SEE ALSO: Whistleblower admits to fabricating the Kim Sae Ron audio file released by Garo Sero Research Institute

At a restaurant, Yura revealed how her hearty appetite goes way back, sharing, "When I would go to a buffet during my school days, I would eat at least 7-8 dishes." Hong Jong Hyun then jokingly tried to search for past photos of Yura at her heaviest.

After going back to the hotel, they went swimming and saw a pole in the pool area where Hong Jong Hyun tried to do chin-ups. Yura asked, "Let's see how many you can do," to which Hong Jong Hyun confidently replied, "I can do a lot."

They then had a contest on who could stay under water for the longest. While Yura was working hard to hold her breath, Hong Jong Hyun was watching from above and went under water right at the last minute to pretend as if he was the real winner.

Catch more of their Bali vacation this Saturday at 5 PM KST!