1. pectoral muscles: dumbbell lying position lifting and oblique lying position lifting, 5~ 12 in each group.
Second, triceps brachii: supine double-arm flexion and extension or sitting posture single-arm dumbbell flexion and extension, 5 groups each, 8~ 12 in each group.
Third, biceps brachii: dumbbell bending and oblique dumbbell bending, 5 groups each, 8~ 12 in each group.
Latissimus dorsi: dumbbell rowing or dumbbell pull-down, 5 groups each, 8~ 12 in each group. Or ... Wide grip pull-ups, 3~5 groups, each group tries its best.
5. deltoid muscle: sit in dumbbell lift or dumbbell side lift, 5 groups each, 8~ 12 in each group.
6. trapezius muscle: dumbbell shrug or dumbbell hard pull, 5 groups each, 8~ 12 in each group.
Seven, thighs: dumbbell squat