ACSM CPT and ACSM HFS set personal trainers apart from other trainers. The highest broad-based personal trainer qualification is the level 3. ACSM CPT and ACSM HFS takes the knowledge to a higher and broader level. The industry doesn't require trainers to become this highly qualified but those who do have more confidence and are have the knowledge and understanding to be able to answer the questions about what is proper science and what is marketing hype.