Continuing Education Option for NASM-certified PT

Been a personal trainer since Sept 2021 and considering something different to increase my knowledge, not necessarily to renew my cert since I'm still good for the next 1.5 years.

Does anybody have experience with this program "Niel Asher Education Advanced Personal Trainer Professional Certificate"? It's available for online study through Coursera along with NASM and ACE PT Certifications.

Since I'm already a PT (and technically a CNC though I don't use that knowledge much), I'm wondering if this Niel Asher course would be repetitive and not worth my time - or it would add substantial value to my skills and expertise?

And if not, does anyone know of any certifications along the lines of behavioral psych or behavior change?