"The Heirs" napping The cast of "The Heirs" are struggling with sleep. Images of the cast trying to make most of their 5 minutes of shut eye to re-energize themselves, were revealed on the 26th of November. They seem to take a nap anywhere whenever it's break time. Suffering from late night filming in chilly weather, the actors and actresses nap wherever they can but then go back to acting without a hint of exhaustion. Lee Min-ho and Park Sin-hye who are the main characters of the drama, are struggling with just 2~3 hours of sleep every day. Lee Min-ho can be seen dozing off whenever he can and Park Sin-hye also tries to get some shut eye but wakes up without a hint of puffiness. Kim Woo-bin in the role of Choi Yeong-do did his best during his scene and fell asleep right away in the 5 minutes that was given to him while standing by. The way he sleeps is different from the charisma he displays when he's awake. Kim Ji-won-I quietly fell asleep in a corner after a scene and re-energized himself as well. Hyung Sik was caught sleeping with a jumper over his head during break time. Park Sin-hye had caught him sleeping and took a picture of him with her cellphone. Hwa and Dam Pictures claim, "Everyone is trying to manage with short naps and are doing their best".