End of July I took 10 days off for groin injury. Ran for about 5 days and got COVID. Sat out for 10 more days and lost everything. I have built up to 48 miles a week, but my race times are significantly slower than last year. (17:00 5k xc to 30flat 8k xc in college) Did I damage my lungs? Did I lose that much fitness? Will I get over the hump soon? Im worried please offer explanation