
.
KAATSU rehabilitation (
https://en.wikipedia.org/wiki/Kaatsu) in Japan is what started this resurgence. With KAATSU it isn't just wrapping stuff up, there are controls, etc... with the real Kaatsu equipment to make sure that it stays in safe ranges. Also the workouts with Kaatsu aren't fun, it's low intensity (20-40% of max, high reps (30-40), short rests, short training sessions).
When done right it seem to be very safe and good for rehab, the % of bad side effects across Japanese rehab facilities that practice it broke down like this in a recent study based on 12,642 subjects - "The incidence of side effects was as follows; venous thrombus (0.055%), pulmonary embolism (0.008%) and rhabdomyolysis (0.008%)".
But again, that's done correctly, not just wrapping things up willy-nilly.