It’s weird—Eddie’s bio on the CUT site says he has many certifications, but doesn’t specify what they are. I do, however, see he’s worked at places like Equinox and Sports Club/LA, and I am 99% certain they would never hire a trainer without a nationally recognized certification (e.g. NASM or ACE).
Tamra? Isn’t listed on the “team” so who the heck knows. An MRS isn’t a qualifying accreditation ... that I know.
It gives you BMI, but it’s more than that. On the InBody, you grab a hold of the two handles, and you also stand barefoot as you would on a scale. I don’t know the science of it, but it reads fat mass, muscle mass, water mass, skeletal mass... and tells you fat/muscle in your limbs and torso. You see all the results on the printout. Ideally your trainer would walk you through everything, and my guess is that “in real life” Eddie would do just that. It’s a legit thing and it’s REALLY helpful in the hands of an expert. Like anything it is imperfect, but I’ve found it to be more accurate than (the dreaded) calipers.