(one's) finger on the pulse

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(one's) finger on the pulse

A keen awareness of current trends and happenings. Sara really has her finger on the pulse of nightlife in the city, so I would ask her where you should have your birthday party.
See also: finger, on, pulse
References in periodicals archive ?
When Kocot writes in the poem titled "Lithium"--"I have my finger on the pulse of something / My mind is a sea that eats me, / the fidgety harmony of two trains passing"--she is not lying.