Just that really .Have started taking magnesium after recommendations on another thread
www.mumsnet.com/talk/am_i_being_unreasonable/5416409-really-embarrassing-poo-question?page=8&reply=147495917
and can't believe the difference it's made .
I can't imagine why it works ,I've never felt that I was constipated .Maybe it increases motility or helps the movement ,no idea .