Reminds me of last Saturday. I felt sluggish from the start and then worked about as hard as I could to try and hang on to the group. I was fried at the 25 mile break and couldn't recover enough to make any power. My legs hurt the rest of the way and I had to go to my lowest gear on every uphill. (68 miles and 3500 ft) The most I've hurt on a ride in a long time. Went out for an hour Wednesday morning and still felt like crap. Maybe some sort of sickness, idk. Went out this morning and almost felt normal.