Here you are, the most standardized dumbbell fitness course e-book at present. Here is the e-book download: /view/ 143 12.html Standardized Dumbbell Fitness Course-Introduction to Zhao Zhixin Dumbbell Fitness "Zhao Zhixin Dumbbell Fitness" was written by a famous health education expert, Mr. Zhao Zhixin. In addition to introducing 38 classic dumb-bell exercises, it also designed a complete fitness program of "nutrition+exercise+rest", which was carefully designed for obese people, bodybuilders and office workers. Dumbbell is a simple, convenient and practical fitness equipment. Like a chisel, it can accurately carve every muscle of the human body-as long as you practice scientifically, you can carve a perfect body. Practicing dumbbells is not limited by the venue. No matter where you go, no matter how busy you are, as long as you carry a pair of dumbbells with you, even if you practice secretly, you can build a perfect figure.