Group fitness is an exercise program that is performed with other people and is usually led by an instructor, and can be divided into these four groups according to the basic fitness components: cardio programs, muscle programs, cardio-muscle programs, and body and mind programs. It is a well-known fact that exercise has a positive effect on human health, and group fitness programs as such bring with them various advantages. However, when thinking about going to this type of training, the exerciser should be aware of the disadvantages of group training, which could be crucial for going to the same. The biggest flaw of any group fitness program is insufficient dedication to the individual. Since the planning and programming of the training is not according to the wishes and needs of the individual, it can have a negative impact on the exerciser's results. Given that such an approach is not optimal in terms of respecting the individual needs, goals and abilities of the participants, today individual training is increasingly popular, which, with a professional trainer, is fully adapted to the individual. In addition to influencing the components of health fitness, regular physical exercise also has a positive effect on psychological status. Physical activity or exercise can improve health and reduce the risk of developing several diseases such as type 2 diabetes, various types of tumors and cardiovascular diseases, but most importantly our quality of life.