Where is this trainer working? All of the details would need to be given, but odds are that what he/she is having you do is not correct. I worked as a personal trainer for "the big B" and all 6 trainers there were incompetent, except for me and one other guy. Be careful. Even if a trainer is certified doesn't really mean they know thier stuff. Ask to speak with previous clients. Testimonies from previous clients who have achieved their goals is the best qualification a trainer can have.