Filler, usually sand mixed with sawdust or broken corn and oranges. Sand with more sandbags is hard, and sawdust or corn stalks with more sandbags are relatively soft. The skins of sandbags can be bought online or in sporting goods stores. Or use a stronger bag.

2. The outer layer of the bag is leather or artificial leather, and the inner layer is lined with nylon cloth or canvas. There are 10 bags with a height of 10 cm and a thickness of 30 cm, and the bags are filled with recycled silk or shredded old cloth pieces. This loading method can prevent silk and broken old market chips from depositing at the bottom of sandbags, and can keep sandbags full and moderate in hardness.

It depends on the specific situation. If the house has a roof truss, commonly known as a beam, it can be hung directly on the roof truss. Pay attention to the sandbag mouth must be firmly tied. It's best to hang it with a chain. If not, you can hang it outdoors or drill a hole in the roof and hang sandbags like ceiling fans.

1. The sandbag is designed to make muscle tissue adapt to a certain reaction force. After hitting the target, the muscles will feel the resistance of the sandbag and react to the pain on the limbs. Constant hitting will strengthen the hardness and strength of the limbs, so that the limbs can penetrate the strength more thoroughly after contacting the target. Through sandbag training, the parts that can be exercised can be well developed, such as neck, arms, chest, back, waist and calves. So sandbag training is mainly to exercise the strength and explosiveness of the upper body. Friendly reminder: don't abuse your physical strength and don't talk about rhythm. The rhythm of punching sandbags should be changed within 3 minutes. Most people will only work hard, and they will be exhausted in less than 30 seconds, but they think it is lack of endurance. If you can't breathe, attack without a purpose, and don't understand changes, you will greatly consume your physical strength and the effect will be inferior. Eliminate a rather disturbing strike.

2. Playing sandbags often can strengthen the body, lose weight and shape, and make you feel happy! Can promote metabolism, improve vital capacity and improve immunity! Can improve physical endurance, explosive power and reaction speed! Can improve the sense of space and distance! Can significantly improve the hardness of fists and feet, absolute attack speed and hitting power! Let you be braver, more tenacious, more tenacious and more lethal (Kung Fu)! It can make young people more energetic and middle-aged more masculine!