There are lots of good reasons to have a personal trainer. If you are new to exercise, A trainer will instruct you on proper form of exercises. This is crucial to prevent injuries. The trainer can instruct you, then monitor you, and correct any mistakes. A trainer can put together a comprehensive program, incorporating cardio and strength training, and even flexibility. A trainer can also be your biggest cheer leader. If you are paying your trainer, you are much less likely to blow off your workout. Many of my clients tell me that the days they workout with me are their hardest workout days. While they might know what to do on their own, they often don’t work quite as hard all by themselves.