What certificate does fitness exercise need?

A fitness instructor first needs to have a fitness instructor qualification certificate, which is also the first consideration for a gym to choose a fitness instructor. Then, as a gym supervisor, I pay more attention to everyone's training certificate, which is the certificate issued by the gym to graduates. We don't need to spend more energy on training, so we will naturally save energy. So I often go to the Asian Institute of Physical Fitness to recruit fitness instructors.