The number one tip to make sure you work out next week? Pencil in your workouts ahead of time. Scheduling exercise in advance will help you stick to a game plan while still balancing your workload and social calendar. Phone a friend, set up a workout date, and add your planned gym sessions to your calendar; or if you can, pay for a class ahead of time. All these techniques will make you far more likely to stick with the game plan, up your endorphins, and sleep better each night.