If the muscle contractions of shivering cause the body to produce irisin , which then influences the development of brown fat that generates heat , the hormone may have evolved to help stave off hypothermia .

当肌肉由于颤抖而收缩时，身体就会产生鸢尾素，进而影响能够产生热量的褐色脂肪的发展，故荷尔蒙可能会进化到帮助身体摆脱低温的困扰。