> “Blood flow restriction exercise has been shown in studies on Earth to give similar muscle, bone and cardiorespiratory training benefits normally seen during higher intensity exercise, at much lower exercise intensities and durations,” Caplan said.

Interesting, where can I learn more about putting this into practice?

I wonder if it is related to 'voodoo flossing tape', which is latex tape that is tightly wound around an injured joint. After exercising the tape is removed and this somehow seems to aid in healing, though it's not clear how it works.