I will watch this with great interest. Beginning to hear tinnitus is one of my backstop signals for tiredness, where I can avoid sleep deprivation inertia on w

I will watch this with great interest. Beginning to hear tinnitus is one of my backstop signals for tiredness, where I can avoid sleep deprivation inertia on waking, if I go to bed within half-an-hour to 2 hours of onset. It seems to reliably relate to changes in muscle tension I sense around my ear and upper neck, often some slow twitching as well. It's a related sensation to satisfying yawns, stretching that eustachian tube.