Of course, as long as you do so at least 48 hours before the class. If you do not cancel your class 48 hours before, unfortunately, you will lose it.  If you need to change your class to another day, open your confirmation email, at the bottom you can see two buttons: RESCHEDULE. It takes you to a page where you can book the class for another day/time.  CANCEL. Cancel your class.  We strongly suggest that you reschedule your class to another day.