How do you best manage your team's workload as a project manager?

Good project managers are sort of like a jockey in a horse race. They know exactly how much their team can handle, when to push the pace, and when to back off and let everyone catch their breath. Effectively managing staff workload is just as important as keeping track of the schedule and ensuring the budget remains on the contract. If you push the team too hard as a project manager, they'll get burned out, alienated, or leave the firm altogether.