打盹儿nod off/snooze/ take a nano nap/ take a little catnap;
打瞌睡doze off;
小睡catch a wink;
睡得很沉sleep like a log/be a heavy sleeper;
睡觉容易醒be a light sleeper;
去睡觉hit the sack/hay;
睡一整天sleep around the clock.
