i agree totally and have recent experience to prove the above. just last week i underwent a quantum leap in my ss, being able all of a sudden to kiss and wrap my lips around my entre glans for extended periods with normal breathing, and achieving heretofor never experienced sensations! i was in like heaven and have never ss'ed longer (one hour +)
all day the next day at work, no pain or repercussions, and i fantasiczed totally about licking my dick head again, and while i was able to do it as soon as i got home that night, it was not quite as comfortable as the previous night.
and the next day i felt the same desire to suck all day long, and when i got home all horny, i could just barely lick my piss slit, and so i gave up, realizing there must be downtime inbetween long ss sessions (at least at my level anyway).
this would be similar to how you work out muscle groups in weightlifting, i suppose ... never working the same muscle group two days in a row...?
DUDES, i always do a lot of "back stretching," ie, reverse stretching (over a big plastic exercise ball i bought). i have undergone slight back (especially neck) injury and realize: I MUST BE SATISFIED with sucking JUST my dickhead and wait patiently for the next quantum leap: getting down my shaft and inch or so? hmmm....
i don't want to be set back in my progress -- so slow, little, no or even backward progress is best if i am to remain healthy, physically and sexually.
BILL
(still there's nobody better to suck ur dick than somebody else:)