Feeling tired, I was in two minds about the planned session. As it turned out I probably should've passed. I started tonight's group Zwift Tri Academy session but I didn't complete. After the first rep I was feeling congested, my breathing wasn't great and my heart rate beyond where it should've been. I adjusted things down a little and stepped off after hitting the 5k mark. Disappointing but better to abort than doggedly continue and make myself worse.