What Should you Expect from your Personal Trainer/Fitness Coach There's an old saying and I think it goes, “Hope for the best, expect the worst.” Well when searching for a personal trainer I think it's quite the contrary. Hope for the best and expect the best. Personal Trainers are charged with the job of working with your body. Both personal training clients and group training clients should expect a certain level of professionalism when it comes to the service that are paid for.