The main reason why Nakata's fitness class is so low is the membership system. Different from other gyms, Nakata Fitness Studio does not charge any fitness venue fees, but only needs to pay for the corresponding time of private education courses. This can save some expenses for members, and also reduce the operating cost of the gym.

For private training courses, Nakata Fitness Studio charges by the hour, which is different from other gyms charging by the month or the year. This way can better meet the individual needs of members and facilitate their calculation and planning.

In addition, Nakata Fitness Studio also provides a series of fitness services, including private courses, health consultation and sports training. These services are customized for individuals, which can better meet the needs of members and improve the fitness effect.

To sum up, the low cost of Nakata fitness class is mainly due to the membership system, which only charges private tuition fees and provides a series of personalized fitness services.