Do you guys do this? I find that if i push out very very slightly during the entire session, it stops my asshole from clenching. I let the inner muscles do all the work, in the form of involuntary contractions
that really helps me loosen up, yes!
Even if you just relax/release your anal sphincter and, especially if you can relax the BC (bulbocavernosis) at the base of penis, there is an intensification of sensation that leads to anal involuntary contractions which,in turn can lead one on to bigger and better sensations...