ACE or IFPA personal certification?
I had the same question. I was introduced to NASM. NASM is widely recognized because it’s the hardest to get. The reason? While other certifications focus on things like posture during a workout, the NASM curriculum forces you to learn more about the body. It teaches you way more than you ever wanted to know, a lot of biology stuff like how the nervous system works, as well as nutrition and dealing with injuries. For this reason, it’s a much more in-depth approach. NASM also offers the option to continue to work towards further certifications and specializations.