1, you don't need to go to the gym. There are many methods of unarmed training. You can do fitness training with some simple equipment, such as horizontal bar, parallel bars and dumbbells.

Going to the gym also has many benefits. Fitness is a boring sport that needs long-term persistence. If there are partners in the gym who train together, they can supervise each other, promote each other and protect each other, and the effect is better.