No, fitness can only be effective if you exercise for a long time. If you have the basic skills of fitness, two months of exercise can achieve a certain fitness effect, which is equivalent to the army's surprise training for veterans, and you can quickly find the basis of previous training.

If there is no fitness foundation, two months of hard training can achieve certain results, and the effect of extreme fitness is just a daydream. In the long-term fitness career, the people who have the ultimate fitness effect are senior personnel with several or even more than ten years of fitness experience.