In my job I am lucky to see and help people everyday improve and smash there own personal goals, be it lose weight, tone up, run there first 10k/marathon or breaking it down further completing a Plank for 60 seconds or a Burpee. However big or small this milestones seem to me or you ,they can be huge in a person's own journey .
If your thinking of joining a fitness class be it Circuit, Bootcamp, Aerobics, Kettlebell or what ever it may be i have come up the reasons why you should give it a try.
You can stay challenged and keep making Progress no matter what shape your in, no need to worry about being perfect, be yourself, challenge yourself and ultimately be healthier.
The best classes will be designed in a way to challenge everyone but still keep the group together so nobody gets left behind.
Another very common payment system would be to book on a 4,6,8 week programme for a set fee , this means clients are committing to train over a set period and pay up front, which usually means a cheaper per class price.
Keep in mind if your goal is weight loss you have to accompany your training with a good sensible and healthy diet.
You may have a bigger or more important reason to take care of yourself . For those living with illness like diabetes ect, living a healthy and active lifestyle is a absolute necessity .
I think this type of workout provides a sense of accountability . People are less likely to miss a workout if the they think their absence will be noticed by there peers.
Motivation is hugely important, as exercise is not easy nor designed to be, "Mother nature does not lie" you and only you can do the work.
All workouts are designed and tailored to improve strength and endurance while burning calories.