hit the ground running
Seize an opportunity; begin at full speed. For example, As soon as the front office gave its approval for the new department, we hit the ground running. The origin of this term is disputed. It may come from troops dropped into a combat zone, from stowaways jumping off a freight train as it nears the station, or from Pony Express riders avoiding delay when they changed mounts.
Words nearby hit the ground running
hit the bricks,
hit the bull's-eye,
hit the ceiling,
hit the deck,
hit the fan,
hit the ground running,
hit the hay,
hit the high spots,
hit the jackpot,
hit the mark,
hit the nail on the head