It is normal to want to stop sexual activity after orgasming; if you give yourself some time (depending on your age and general health) you should be able to feel excitement again in a short while. Your body just needs time to recharge.
Another option is to stop or slow down before you orgasm in the first place, giving your body a chance to calm down. You would then continue, which would make masturbation last much longer - especially if you keep pausing or slowing down. [ alisonmarie's advice column | Ask alisonmarie A Question ]
Attention: NOTHING on this site may be reproduced in any fashion whatsoever without explicit consent (in writing) of the owner of said material, unless otherwise stated on the page where the content originated. Search engines are free to index and cache our content. Users who post their account names or personal information in their questions have no expectation of privacy beyond that point for anything they disclose. Questions are otherwise considered anonymous to the general public.