Sometimes I feel a little pain in my lower back after cycling (nothing too long, mainly cycling around London for general commuting...5-10Km). It could be due to a number of reasons (I have a bad back anyway), but I would like to eliminate bad cycling posture as a possible cause.
I can only find one mention of cycling posture on SE, but it refers to flat bars: Proper Posture on a flat bar road bike.
My bike is the correct size for me I believe, using the old "its just the right height for my crotch..Ouch!" measurement.
Does anyone have useful sources of information how to achieve the correct cycling posture?