1. Comfort: sportswear is usually made of fabric with moisture absorption, perspiration, ventilation and comfort, which can keep the body dry and improve the comfort during exercise.

2. Safety: The design of sportswear usually takes into account the safety problems that may be encountered during exercise, such as reflective strips and anti-slip design, which helps to improve the safety during exercise.

3. Picture: Entering the gym in sportswear can show your professional attitude towards fitness and your love for sports, and help to establish a good personal image.

4. Socialization: The gym is a social place. Wearing sportswear can make it easier to blend in, establish contact with other fitness enthusiasts and share fitness experience and achievements.

5. Motivation: Entering the gym in sportswear can stimulate your enthusiasm for sports and enhance your motivation and perseverance.

In short, wearing sportswear into the gym is conducive to improving the comfort, safety and image of sports, and also helps to better integrate into the social environment of the gym and stimulate their enthusiasm for sports.