I have a private facility at my home (not connected to the house) that is nicely equipped for all fitness levels. I work a full time job with the goal of full time PT out of my home. I have been in the health and fitness world for many years but became certified in 2013. I currently train clients before and after work. I agree with the others about finding a specialized area to train, but in order to figure that out I am working with clients that are all levels of fitness, ages and limitations. I have many years of experience with trainers and have always kept up on health and fitness so I don’t feel like I’m blindly going into my business on that side of things. I have worked in the corporate world all of my career so I feel confident on the business side as well. I do not have other trainers working with me, it’s just me at this time. So can it be done? Sure it can. I have not been in business long, but I am already having to turn people away because of time constraints. I train every morning before work and every evening after work. I’m not ready to leave my job yet for a few reasons, but hopefully by the end of the year I will be in the position to do so. Good luck with your certification and starting a business. I believe you can do anything you set your mind to.