Portraying meltdowns are physically and mentally taxing

While filming a scene from Your World In Mine in a Woodlands flat, Richie Koh's on-screen meltdown actually caused neighbours to head out of their homes to check out the commotion.

Since then, the 29-year-old Mediacorp actor has won hearts and received praise for playing Zheng Tiancai, an adult who is intellectually disabled.