boredcivvy said:depends what type of pain it is?
is it central and comes from the spine?
or is it from either side, the muscular wall?
There is some Medical Officers in the Officer Forum, could ask them
boredcivvy said:is it right at the bottom of your spine? i.e. the Coccyx (tail bone)
does the pain prevent you from performing the sit ups? or does your abs and hip flexors fatigue preventing you from doing sit ups?
bruised coccyx can be really painful, just put a pillow under back when doing sit ups for a while.