When you are training with a personal trainer, communication is a big factor in a successful program. If something is not feeling right with a specific exercise or you are not feeling good, let your trainer know. Maybe you are reversing your breathing or holding your breath and it is making you get nauseous. The trainer will be able to see if your breathing technique is up to par and if it is not, then they will correct it. In addition, if some exercises are causing pain or abnormal tension in certain areas of your body, let them know immediately so they can correct your form or choose another exercise that works the same muscle groups, but without placing strain on that part of your body. Communication is key to a successful personal training program.