Friday-Saturday runs

Friday: a rather compressed 30 as 2:1 due to awkwardly scheduled day; today, a gorgeous 90 minutes with 20 as 1:1 to warm up and cool down and 4:1 for 50 in the middle. LB gets sore very quickly in the longer interval but I just keep core muscles activated to hold slight pelvic tilt and it at least feels well supported, even if I am making a grimace or two...