83,2 - back problem

Feels like my back is trying to send a message that I should slow down. Yesterday I my back was aching, but I went to aikido class and back felt much better after it:-)

Today I'll roll in the morning and in the evening I'll do my gym workout. I have to drop the loads on squats, but scale up the reps. It might be good for variation, but still I'm feeling like a looser. I know I can squat 72,5 kg 5x5 easy, but if my back can't take it... There must be something wrong with my form.