Come August, summer unofficially comes to a close in the Valley of the Sun. Residents are back in town from vacation, and schools are back in session. When it comes to fitness goals and routines, back-to-school time is an ideal time to get back into a routine. Attending group fitness classes for accountability and motivation is a great way to commit to a routine. Read on for the top five benefits of choosing group fitness classes to ramp up your back-to-school routine.