Is getting a darker glans normal after hanging?

I’ve been hanging for more than a month now and I keep on getting a darker glans after each workout, but the color returns after a few minutes. I’m maintaining a 2-set 20-minute hanging. Is the said temporary discoloration normal? Perhaps, it’s from the reduced blood flow, right?

Yes, it’s normal. It is a consequence of reduced circulation - dark = blue ist ok; dark = black is not ok because it indicates tissue damage. As long as the color returns to normal within minutes I don’t see any problem

Also why you spend the time durring breaks massaging and heating your unit to restore circulation.

You said black is not ok…what if it returns to normal color after minutes? I haven’t experienced getting black, though! At least I know what’s happening when it happens ;) Thanks!