It wouldn&#x27;t be about &quot;not learning how to count&quot;, but about keeping a rhythm that makes the time predictable within a relatively small variation. I used similar tricks for long exposure photography back in the long ago. (There was a period in the late &#x27;70s and early &#x27;80s when radium illuminated dials had gone away, their replacements didn&#x27;t stay illuminated long enough, GraLab-type timers were too bulky by far, and neither LEDs&#x2F;micro fluorescent segment displays nor LCD side-lighting on watches were up to the task. I had, between cadets and the regular force, more than a decade of military experience then. <i>British Grenadiers</i> - a marching tune - takes 16 seconds to play&#x2F;whistle&#x2F;hum through once, breaks down easily into 4-second chunks, and only &quot;feels&quot; right if the speed is right for a 120 paces-per-minute march. <i>Heart Of Oak</i> takes 32 seconds, etc. That allowed me to be remarkably consistent across exposures without a usable external timing device. Habitual prayers, especially when combined with something like a rosary to keep the count accurate, would have the same sort of consistency.)