come to one's senses

/K AH1 M T UW0 W AH0 N EH0 S EH0 N S IH0 Z/
verb
  1. 1

    To reawaken after having lost consciousness.

  2. 2

    To become reasonable, comprehending, or responsible, especially after having behaved in an unreasonable, uncomprehending, or irresponsible manner.

Source: https://en.wiktionary.org/wiki/come%20to%20one's%20senses