Meetings are a necessary part of business execution. Often times, the quality of your meetings and the timing of your meetings have great impact on your productivity. You should come out of every meeting with a very clear "Who What When."
Use Habit 2 of Covey's 7 Habits: Begin With the End In Mind
Minimize your meeting time AND maximize your outcomes. Start every meeting with the question: "We will be successful if… ?" If you cannot answer that question, save yourself and your team time and effort by canceling the meeting and doing something else productive with your time and energy.