Bib is technically correct. The only issue I take with it is the amount of time. Depending on how fast YOUR body heals will determine how often you need to apply something to sustain the gain from your last routine. In general I would say to apply stress within an 8 hour period. Now this will allow for sleep time but interruption of the healing process at those intervals disallows the establishment of new enzymes, proteins and collagen that is used to strengthen and rebuild trauma points.
This is the whole idea behind an ADS because it keeps just enough stress on those ligaments and corpus cavernosa structures to retain the physical structure we have created with heavy hanging or whatever means you use to create gains.
Statistically I can show how I could take 2 and 3 days off from my hanging routine and yet my gains on a per session basis was consistent week to week and month to month. The secret was utilization of an ADS daily for as many hours as I could. Usually I could get in well over 8 hours a day and in many cases I wore my ADS for upwards of 15 hours a day.
I obviously believe an ADS applied daily is the key to steady consistent gains over a long period. Months.