Yeah that would be a different kind of ache, at least I think we can assume that considering pure 4-HO tryptamines are generally pretty light on the body.
Nonetheless, some people may still react unfortunately when the buzzing energy is not channeled properly. I think that some people have a talent or knack for figuring that out intuitively right away so they rarely if ever have such issues with body high turning into body load.. then for the majority it may be unpredictable and unregulated, more or less because it would be a matter of luck whether they can catch those sensations in the right groove in any given instance, and another part of the demographics may be naturally awkward handling the body load / body high effects, I think those people would be predisposed to getting various side-effects without even realizing the connection with something as dynamic as body load.
IMO / IME yogic practices really help with channeling such effects, and this would be the solution for people who have issues that can not be attributed to and matched with pure 5-HT3 agonism effects (which indeed should reliably respond to meds like ondansetron).