So after several boring sessions, I'm glad to say I've made some progress. During my last session, after 50 minutes I finally feel what it's called P-wave, I assume. My whole body was in spasm mode and the spasm starts from my thighs, and then it flow to the butt cheeks, and then around to my pubic area. I always thought the feeling of P-wave is something like a continuous prolonged orgasm (similar to the female orgasm) but apparently it's not! The spasms feel good, satisfying and subtle.
One question though, since it took my 50 minutes to get to that state, how long can I enjoy the body spams? In the manual it says between 60 – 90 minutes for each sessions for beginners but I already wasted 2/3 of the time relaxing. I just don't want to push myself too much and risk injuring my prostate.
EDIT: I enjoyed the body spasms for around 15 minutes only. I'm just too afraid to continue.
Source: http://www.reddit.com/r/aneros/comments/3f67lv/made_some_progress_d/
Don’t worry about the time limit, it’s more to prevent new users from becoming frustrated. (If you haven’t felt ***anything*** at the 60-90 minute point, I do recommend stopping and trying again some other day.) You’re not ‘wasting your time’, and rushing anything is counter-intuitive. As long as you’re gentle with the Aneros and feeling relaxed, you won’t hurt your prostate by exceeding the recommended time for beginners. But remember, with longer sessions, you may have to reapply lubricant midway.