come to one's senses
Become conscious again; wake up.
The boxer was knocked out and did not come to his senses for several minutes.
The doctors gave Tom an anesthetic before his operation; then the doctor took out Tom's appendix before he came to his senses.
To think clearly; behave as usual or as you should; act sensibly.
A boy threw a snowball at me and before I could come to my senses he ran away.
Don't act so foolishly. Come to your senses!