From early in my practice, Day-After Effects have been a very significant part, beginning with Butt Buzz, expanding over time into the day of joy in the O-zone, where mini-Os and greater dry-Os (hlaser's Chairgasms/Cargasms) begin as spontaneous, become more regular and then are available at will when you choose out of the that delightful background O-zone buzz.
The best and most unique Day-After Effect so far though goes beyond these. In a previous post here I described the Mitochondrial Orgasm and at first that seemed like it might have been a one-time experience or interpretation.
And yet that experience was so wonderful and affecting that I felt a yen to "get back there" and also to try to research the possible science of this if the M-O was name was anything more than a metaphor. Because of my earlier interest in Tantra and Tao and the recent readings and interpretation of the results of my practices with Aneros and KSMO, I joined The Tao Bums this past January but got little response/feedback there until August and since then have really enjoyed the discussions there, which are by no means primarily sexual as the basis of Taoist practices.
By late September, after getting smaller events that had the same millions of tiny campfires sensations, I had the first purely Aneros Day-After Effect full Mitochondrial Orgasm and posted the following in the Forum here: