The last 3 or 4 weeks I've been sick, and nothing seems to help. After XC season, I took 2 weeks off and I've been training again for 3 weeks. In that time, I've been treated for strep throat and I finished a z pack two days ago. I've been coughing a lot, and my running has been terrible. Last season, an easy day for me was 10 miles at 6:10 pace, and now I can barely run 5k at that pace. My legs feel generally dead, and it constantly feels like I'm "tying up" in my arms/ neck/ shoulders. Can anybody offer some advice? I understand that it's possible that I haven't given the z pack enough time to work, but it's a very frustrating situation. Thanks in advance.