‘憋劲儿’ (biē jìn r) is a colloquial verb meaning to secretly muster up physical or mental effort—often to suppress emotion, endure discomfort, or prepare intensely for action. The character 憋 (biē) means ‘to hold back’ or ‘to suppress,’ while 劲 (jìn) means ‘strength’ or ‘effort,’ and the 儿 (ér) suffix adds informality and regional flavor (especially common in Northern Mandarin). Together, they evoke the image of tensing up internally—like clenching your fists before a sprint or biting your lip to stay calm during criticism.

This expression conveys quiet determination rather than visible exertion; it’s about inner readiness, not outward display. It frequently appears in contexts involving self-control, perseverance under pressure, or preparing to act decisively—such as athletes warming up, students concentrating before an exam, or someone holding back tears or anger. It carries a slightly gritty, resilient tone and is more common in spoken language than formal writing.