Voting rules: Choose the Personal Trainer Certification you think is the most difficult!
This is a community-based ranking of the most difficult Personal Trainer Certification. We do our best to provide fair voting, but it is not intended to be exhaustive. So if you notice something or Certification is missing, feel free to help improve the ranking!
A participant may cast an up or down vote for each Certification once every 24 hours. The rank of each Certification is then calculated from the weighted sum of all up and down votes.