1. Increase the risk of injury: Wrong actions may cause unnecessary stress on joints, muscles and ligaments, thus increasing the risk of injury. For example, the wrong squat posture may lead to excessive knee pressure, which may lead to knee arthritis and other problems.

2. Weakening effect: Correct movements can exercise the target muscle group more effectively, while irregular movements may lead to insufficient muscle exercise, thus reducing the exercise effect.

3. Waste of time and energy: The wrong action may make you spend more time on an action, but in fact this action has limited effect on your exercise. Besides, if you keep trying to correct the wrong actions, you may waste a lot of time and energy.

4. Affect self-confidence: When you see that there is a big gap between your movements and those of professional coaches or others, it may affect your self-confidence, thus affecting your exercise enthusiasm.

5. Long-term health problems: Persisting in wrong actions for a long time may lead to some potential health problems, such as muscle imbalance and joint instability. These problems may gradually emerge at some point in the future and have an impact on health.

Therefore, in order to avoid these consequences, it is suggested to consult a professional coach for correct exercise skills before starting fitness, and keep the correct posture during exercise. With the improvement of skills, you can try more challenging exercises to improve the exercise effect.