Here are the benefits of having a personal trainer
Motivation – many people require someone to push them and make them work out
Accountability – since you paid for a session, you are much more likely to show up
Knowledge – personal trainers are educated in working out and can help you get the most out of each work out, making your time in the gym that much more effective
Competition — Some people feel more motivated to get that last rep in or add one plate on the bar because the trainer did it – friendly competition can be a big motivator
Experience – Personal trainers have a lot of experience working out and can impart that on their clients, helping them avoid injury from bad form or overtraining