Some advice please. When I walk, I have an extremely long stride (I'm 5' 8" with fairly long legs). When I run, my strides are much shorter and I seem to bob up and down quite a bit! Should I try to lengthen my running stride, or just do what comes naturally. When I've attempted it in the past, my leg muscles (all over really) ache terribly (at the time, not afterwards). Should I persevere?
(creeps away quietly, embarrassed at treading on such hallowed turf)