Almost certainly because you are hyperventilating. I have had two girlfriends who had this-- fortunately with the second I had a good idea of what was hapenning... your orgasms will likely be even better and more enjoyable (without the head-lightness, orgasms and post-orgasm feelings seem to be more intense) if you can keep the numbness from happening-- by either consciously controlling your breathing, or breathing partially into a pillow/arm/whatever so some of what you're inhaling is recycled. I'd suggest you do that, because thinking about your breathing is a bit of a distraction from pleasure!
Copyright 1994-2018MedHelp.All rights reserved. MedHelp is a division of Vitals Consumer Services, LLC.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.