Keep (one) on (one's) toes verb phrase
If someone or something keeps one on one's toes, they force him or her to stay active and focused.
Asking students to answer questions keeps them on their toes.
Babysitting is a job keeping people on their toes because dangerous situations can happen at any time.
The project has kept me on my toes for 2 months.
To stay calm in a difficult situation and react to unexpected things quickly
Used to warn readers that an important detail of the plot is about to be revealed
To keep an eye on your enemies' behavior in order to avoid any malicious actions
To give someone information
To warn someone that they are responsible for their actions, plans.
The verb "keep" must be conjugated according to its tense.
The origin of this phrase is not clear.