If you are a fighter or trainer than you are are able to reap the benefits by exercising with a punching bag. From a cost standpoint, it's a lot more economical to purchase a punching bag for gym or training.
The punching bag is only among the best"overall" workouts, in the cardio and strength training standpoint. You can check this link https://everlastonline.eu/it/boxe/sacchi-da-boxe.html/ to buy beat quality punching bags.
If you keep at it, you will succeed. Most people give up the 15-20 minutes of working the bag each day because it is hard work. Like anything else in life, stick with a workout and you will see results. Most who give up do so in the first few weeks.
Tell yourself that you will last a month at whatever workout it is you choose before making any rash decisions.
Returning to the benefits – All major muscle groups are exercised with proper technique; back, arms, glutes, abs, chest, etc. With 15-20 minutes a day, you will achieve increased endurance and mental focus. These benefits will stay with you in and out of the gym.
Before starting a workout, wrap your hands, wear proper gloves (pro boxing or MMA grappling/striking), and set a goal for yourself. Set a goal of 15 minutes every other day for a full month and push through the limits.