1. Encourage each other: A good fitness partner will encourage you when you are tired and want to give up, so that you can maintain a positive attitude and enthusiasm for fitness.

2. Share experience: You can exchange fitness experience and share your own training plan and progress, so as to better adjust your exercise methods.

3. Division of labor and cooperation: You can work out an appropriate exercise plan together, share the training intensity, supervise each other and help each other overcome the difficulties in training.

4. Reduce loneliness: Sometimes a person may feel lonely when going to the gym, but having a good fitness partner will make you feel happier and reduce loneliness when exercising.

5. Increase socialization: Exercise with fitness partners can also make new friends, expand social circle and make fitness more interesting.

6. Improve the exercise effect: Sometimes a person may not be able to achieve the best exercise effect, but a good fitness partner can help you complete the movements better and improve the exercise effect.

In short, having a good fitness partner can help you achieve your exercise goals more happily and efficiently, and at the same time, you can make new friends and increase your social interaction.