On January 15, numerous idol stars gathered at Goyang Gymnasium in Gyeonggi Province to film the 2018 Lunar New Year special of MBC's 'Idol Star Athletics Championships'.

SEE ALSO: Krystal's past letter to late f(x) member Sulli goes viral

Popular K-Pop groups such as Red Velvet, TWICE, G-Friend, BTOB, VIXX, Seventeen and more participated in the filming session. With that in mind, various photos of the lively atmosphere were revealed via social media and online community boards by fans, stirring up attention. Red Velvet member Irene was captured on site, sitting down on the ground dressed rather lightly despite cold temperatures.

Dressed in a slim fit workout outfit, the idol star can be seen clutching onto heat packs, hoping to stay warm.

Many girl groups had arrived at the filming location all bundled up in long padding coats due to the record-breaking lows. Regardless of the fact that it was an indoor facility, it still wasn't enough for the idol stars to shield themselves from the frigid weather. Seeing this, netizens also expressed their concerns like 'isn't she going to catch a cold dressed like that?'

However, Irene demonstrated her professionalism by putting on a bright smile on set.

Many idol singers apart from Irene were also spotted wrapping themselves in thick blankets in between breaks.

Likewise, 'ISAC' is well known for its rigorous physical activities as various idols like MAMAMOO's Moon Byul, EXO's Xiumin, and BTS' Jin were previously injured during the program. This led to the staff to take further action for this year's show and have a medical team on standby.  

However, it seems another problem has risen as harsh weather conditions are worrying fans.