6-8 is fat-reducing X4.
12- 16 is a powerful muscle strengthening X6.
The fitness stage is to lose fat 6-8 times, 4 groups and 5 devices. According to the local increase to be reduced, one is to reduce fat, the other is to master strength, which part should be used to exercise that part, and then to increase muscle 10- 12 times, 3 groups or 5 devices to strengthen physical fitness and master strength, and finally to increase muscle 12- 16 times, 6 groups. There are many things to pay attention to. Take your time.