overnight sessions

Of course you can! If you’re sleeping with a partner, be prepared for what may happen! Use a good long lasting lube and you’ll be amazed what happens!

Yes, I practice that way most of the time anymore, but be careful.  If you have one if the old style Aneros massagers with the curly handle on the back side, I would be wary of going to sleep with it in because it could end up putting prolonged pressure in a way you don't want. Also, several of us have learned the hard way, if your body thinks you are losing your s#$t, your reflex is to clamp off to prevent a mess, and that will run the device into your prostate at approximately 103 miles per hour. That is not pleasant. I trained myself to bear down when i started stirring with that sensation, and it turns the experience into a string of orgasms for me now. 

Good luck with your sessions!