While both Group Classes and Group Personal Training take place in a group setting, there are significant differences in the design & feel of the sessions: Group Classes – Group classes offer a one-size-fits-all program that does not cater to different body types, levels of experience, and the individual needs of each client. There is generally a higher risk of injury in settings like group classes and less attention from a trainer or coach. PF Group Personal Training Sessions – A form of personal training that takes place in a semi-private environment. You’ll receive hands-on support from your trainer and each member in the session will train according to their own individually-designed training plan.