Reason: The exerciser does not have enough ability to carry out the required weight exercise.

Protection: face up to your own strength training and strive to improve the coordination ability between the active muscle and the antagonistic muscle, the cooperative muscle and the supporting muscle.

Second, there is a lack of understanding of flexibility

Reason: The exerciser does not have the range of joint motion required for action.

Protection: strengthen flexibility exercises, with special emphasis on strength flexibility exercises; Increase the scope of joint activities.

Third, do not pay attention to the correct posture.

Reason: exercisers mistakenly think that it doesn't matter whether bodybuilding, fitness practice and posture are correct or not.

Protection: know the importance of correct posture in sports, understand and master the essentials of correct posture, and repeatedly experience the correct posture needed to stabilize muscle strength.

Fourth, I don't know enough about the strength of small muscles.

Reason: I mistakenly think that bodybuilding only needs large muscles, and fitness only needs superficial muscle groups.

Protection: fully understand the importance of strength training of small muscle groups, learn sports anatomy knowledge and improve training quality; Strengthen warm-up or drafting and rotation exercises to improve muscle excitability.

Fifth, I don't know enough about the function of the instrument.

Reason: Beginners are interested in various instruments and exercise without guidance.

Protection: the teacher should introduce the function, usage and requirements of the instrument; For the first time, freshmen don't increase the weight of equipment, experience and be familiar with the performance of equipment; Pay attention to self-protection when practicing with barbells, dumbbells and kettlebells.