1. environment: everyone is training. Where do you take selfies to sleep? You're a little embarrassed. You can lift iron everywhere. You are naturally infected by this atmosphere, so concentrate on exercise.

2. Equipment: One of the advantages of the gym is the equipment. The purchase price is too high, and many devices may not be installed at home. The gym is fully equipped.

3. Have personal education and mastery: let you gain more professional knowledge to prevent injury and achieve your goals more efficiently and healthily. You can also make friends with all kinds of high people.