A few weeks is almost impossible. It takes a long time to practice. 1. For abdominal muscles, it is recommended to practice six groups of sit-ups every day, each group 12~ 15 times. Abdominal muscles lumbar abdominal muscles are difficult to practice, you have to work hard. The basic action is as follows: 1. Inclined sit-ups. 2. Lie on your back and lift your legs: ... Do it twice a day, once in the morning and once in the evening, and divide it into several groups at a time. A group will do it several times step by step ... 2. For chest muscles: dumbbell flying bird dumbbell bench press side lift is of course the best choice. 3. It's of course the best to practice dumbbells in order to exercise the whole body muscles. The primary fitness program is as follows: warm up for 5 minutes before fitness, stretch locally for 3 minutes, and then warm up for 5 minutes; Stretch for 5-8 minutes after training;

On Monday, chest+triceps training

(1) dumbbell bench press10-12mx3 group

(2) dumbbell bird 10- 12RM x3 group.

(3) Push-ups 15-20 (times) x4 group

(4) Flexion and extension of one-arm nape in sitting posture: 8- 12RM (times) x3 group.

(5) Prone arm flexion and extension: 8- 12RM (times) x3 group.

On Wednesday, back+biceps training

(1) dumbbell rowing: 8- 12RM (times) x4

(2) Wide grip pull-ups: 8- 12RM (times) x4

(3) Narrow grip pull-ups: 8- 12RM (times) x4

(4) Bending: group 8- 12RM (times) x3.

(5) Standing dumbbell hammer bends 8- 12RM (times) x3 group.

(6) Alternate bending with dumbbells: 8- 12RM (times) x3 group.

Friday, leg+shoulder training day

(1) dumbbell squat 8- 10RM (times) x3 group

(2) Dumbbell Squat 8- 10rm3 group

(3) Knead 8- 10rm3 group with dumbbells.

(4) Standing dumbbell press 10- 12RM (times) x3

(5) dumbbell side lift 10- 12RM (times) x3

(6) Raise the dumbbell horizontally before 10- 12RM (times) x3.

Arrange 45-60 minutes of aerobic activities such as running, skipping rope and cycling on Saturday or Sunday.

Exercise your abdomen every day.