हसितरुदितेषु कार्ये श्रमे भये श्वसकाशयोश्चैव । हिक्कादुःखे च तथा नाट्यज्ञैरर्थयोगेन ॥ २३२॥
In dramatic performances, the breast is used to represent emotional states such as laughter, weeping, fatigue, fear, shortness of breath, hiccups, and sorrow, as understood by the practitioners based on the context of these feelings.
english translation