guardyoureyes.com/90-days-chart/rules
What constitutes a "Fall" to require restarting the count?
There are "slips" and there are "falls". "Slips" do not require restarting the count. "Falls" do require restarting.
A "Fall" is one of the following things:
1. Intentional masturbation (with finish)
2. Intentionally viewing improper sites
3. Intentionally calling inappropriate telephone numbers
4. Intentionally seeking out and reading erotica
5. Worse things, which we need not mention
In regard to number 2 (and 4), if someone saw something by mistake and then got a little bit carried away and kept looking at it, or even if someone saw a link and couldn't resist clicking on it but then catches themselves within a few seconds, that would only be considered a "slip", not a "fall". However, if someone decides to actively pursue viewing bad sites, that would be considered a fall.
Warning: Spoiler!