Strengthen the circadian rhythms by the mathematical model of the SCN Changgui Gu, Jiahui Li, Jian Zhou, Huijie Yang and Man Wang Eur. Phys. J. Spec. Top., 231 5 (2022) 827-832 Published online: 03 November 2021 DOI: 10.1140/epjs/s11734-021-00310-x