Jung Eun-ji and Kim Nam-joo, members of K-pop sextet Apink, on Tuesday thanked fans through social media on the set of MBC variety program 'Idol Athletics."

"Finished filming! Thanks to you guys, I think we can drink 100,000,000 Hot 6ix (energy drink) cans. We worked so hard from the early hours ... You're our source of energy. You guys are so darn cute, thank you!" the band wrote in the caption to a Twitter selfie.

This year's "Idol Athletics," filmed in Seoul’s Goyang Gymasium, will see its female idol participants contesting in track and field athletics and archery.

By Yoon Sarah (sarah356@heraldcorp.com)