Yesterday my run was easy and short. I ran the usual bike path route, out and back and added a few minutes to the Oakwood Valley trail. I was feeling heavy and a little tight. Yesterday I went for a short bike ride. My quads and thighs get tight when I try to incorporate cycling into my daily runs. Tight muscles, weak muscles! Maybe it is true. Not sure. Running will overdevelop your thighs. Cycling will do the opposite. If one muscle is stronger than the other, you get some muscle imbalance. Strength training might be the answer for the problem. Total run time: 41 minutes.