I wouldnt say a lack of core strength would give your butt the heavier load. Excuse the pun. lol
It's either genetic or just stress. whatever it is, its a pain in the ass.
My BM was a little harder today and less than usual as I have tried to ween myself off the Dulcosoft(its doing nothing for me other than keep me a touch more regular). I had some fried food last night for the first time in 7 months so that also contributes to the slow and hard movements. I decided that Im going to let go a little untill the operation and try enjoy this festive season a little without going overboard. BM was about 20 mins ago and pain is surprisingly low. About a 2. Could i ironically be healing just before the LIS? then again, this has happened before. Heal a little, see the ray of light and BAM. Surprise surprise. Who knows?