Many working men today have unhealthy lifestyles and eating habits, such as prolonged sitting. Many are either obese or have hunched backs. Even those who don't have these two issues often have poorer physical health than when they were in school, leading them to believe they've aged, when in fact they haven't.

This is due to a lack of exercise, leading to a decline in cardiovascular function and overall physical performance. For those experiencing this, using dumbbells for fitness will yield significantly better results. Below is a systematic dumbbell workout routine for each muscle group. Perform 15 repetitions of each exercise, for 2-3 sets. You can build muscle at home!

Exercise 1: Biceps exercise, 15 reps, 2-3 sets.

Exercise 2: Shoulder exercises, 15 repetitions, 2-3 sets.

Exercise 3: Back exercises, 15 repetitions, 2-3 sets.

Exercise 4: Abdominal exercises, 15 repetitions, 2-3 sets.

Exercise 5: Chest muscle exercise, 15 repetitions, 2-3 sets.

Exercise 6: Leg and glute exercises, 15 repetitions, 2-3 sets.

The above exercises train all the core muscle groups of the human body. If you persist in exercising for 30 days, your physical fitness and physique will change significantly. If you persist for 180 days, you will become a standard muscular man.