No didn't have any back problems (so far!!!).
I tried lunges - all variations, no feeling there..
Knees.., i had little problem before my last half marathon, did long up the hill run and agrivated my fat pad of the left knee. I saw physio as was little worried before my race. So she found that i'm slightly rolling in with my knees when i'm squating, so even more when i run (even i have supportive trainers!) and mentioned my glutes.. That pain went away, but i started getting shin splits in the same leg...
Coming back to glutes- i did some tests if they are working properly... Funny enough, a few ladies did these tests with me and from nearly 10 of us - proper working glutes had just one lady and one was with very big differnce: one working very well, the other not at all!!!
and she had one of her butt cheek obviously smaller!!!
I'm trying some own body weight exercises at the moment, BOSU board too, hopefully one day i'll have sore buttocks..
sounds wiered !!!
p.s. can't wait for tomorrows run!