Around a month or two ago I didn't have any particular 'pleasure' that was generated by the Aneros, but this has changed dramatically.
I haven't masturbated for a while now, maybe a few weeks? I'm pretty sure it's had a really positive effect on my sessions, and on other aspects of my life. It's very easy for me to become aroused before I start a session. I can feel the sexual energy inside me. Every time I insert the aneros I am guaranteed some form of pleasure and I feel like I'm very close to the edge of something, the pleasure feels like it's leading me to something bigger but I don't have any idea what that is going to feel like! It's hard to imagine.
The past two sessions have been really nice. They were both quite different but they followed the same pattern. In both sessions I've been extremely relaxed and comfortable, which has been difficult to achieve in the past. The summer weather has probably helped this since I can keep warm without the use of radiators/space heaters!
I've felt warm waves come over me at around the 15 minute mark of each session. Then my anus starts to feel very warm, my legs begin to twitch a lot, almost vibrating. After a short while I begin to feel a gentle, tickly pleasure in my lower abdomen, my prostate and my legs. It's subtle at first but grows in intensity a little. It's constant for a minute or two at first and then disappears. It comes back in small waves, each wave brings me a similar amount of pleasure to begin with but the feeling lingers for longer each time.