Are you familiar with the Medicine Buddha practice?
Hi, yeah - I've had the empowerment a few times and some explanations. It's the exact same practice that is explained in that text. I've also been lucky enough to have a few days of teachingon Tibetan Medicine, which is a fascinating topic. It's not my main practice at all, though.
Look at the unfathomable spinelessness of man: all the means he's been given to stay alert he uses, in the end, to ornament his sleep. – Rene Daumal