The cast of 'Heirs' get through their grueling filming schedule by taking naps

'Heirs' revealed how its cast members survive their tough filming schedule with behind-the-scenes photos of their cat naps.

Lee Min Ho and Park Shin Hye, who have the most dialogue among the cast as the lead stars, have been revealed to get through their filming with 2-3 hours of sleep daily, while Kim Woo Bin can be seen using his five-minute break to rest up for his next scene. Park Shin Hye also brought laughs by sharing a candid camera shot of Hyungsik falling asleep and looking adorable.

A rep commented, "The cast of 'Heirs' survive their all-night filming with just a brief nap on set, but they don't show their tiredness and carry out their filming rigorously... Please anticipate the top actors who show their fighting spirit with a sense of responsibility and passion to create a high quality drama."

Their hard work seems to have definitely paid off as the drama surpassed the 20% viewer rating mark last week!

source: allkpop