The reason why gyms in Chengdu want to recruit apprentices is to reduce costs and fill the talent gap.

1. Reduce costs: Recruiting apprentices can reduce costs, because the wages of apprentices are lower than those of regular employees, which can effectively reduce operating costs for small gymnasiums with relatively tight funds.

2. Fill the talent gap: At present, there is a shortage of talents in the gym industry. Recruiting apprentices can train more professionals for gymnasiums and fill the talent gap through training and study.