Interesting concept in PN for all I think - I dont feel pain as much as severe fatique if I'm overdoing something at first, then the next two or three days just ache and hurt and zip and zap much more then normal..... I always know this is going to happen - so literally plan around it - also, used to pop out of bed in one hop and go - now its a slow crawl and reaching for pain killers...... quite a change.....