regarding the exam, is it a longer process to become a group fitness instructor or personal trainer?

Hi Jen,

The process and length of time for each depends on your own individual level of knowledge and time you need to prepare/study. An example could be three to six months preparation (or shorter or longer). They are very different (although some information will cross both certifications). Also depends on the certifying agency because some are more difficult than others.
Do you have a background in any type of fitness? What is your passion and what do you want to do? Determine what you want to do first and then decide which certification to go for…