Consider this quote from Charles Spurgeon. I offer it without commentary because I wish not to obscure his words with mine.
"The condition of the church may be very accurately gauged by its prayer meetings. So is the prayer meeting a grace-o-meter, and from it we may judge of the amount of divine working among a people. If God be near a church, it must pray. And if He be not there, one of the first tokens of his absence will be a slothfulness in prayer.”