Ok, I'm going to ask what seems like a straight forward question but pay close attention to 'when it happens' and the extent.
Today I did a 100 mile fast century ride thru Moore county North Carolina. Very hilly area... wonderful ride.
However, for the first 55 miles I was flying and having a great time. I noticed around 33 miles into the ride I was having a twinging feeling in my upper left calf muscle. I road more and had to do some catch up riding with water for other riders in our club from the sags. I caught fine but by the third time I did this my legs were really beginning to cramp including the calf muscle and right above the exterior of the knees and then eventually inside the knee. The point from where it was going from nothing to something thorrible was about 10 minutes.
During this ride, I was averaging two 20 oz. bottles every 40 minutes plus a gel pack or power bar. Likewise, the feelings of absolute pain came on in a matter of minutes and brought me from fying to dying very quickly.
Now, with that said, the prior to night I fueled up with protein and carbs in the right ratios (perhaps a little lower on the carbs then I should have) but only had about 90 minutes of sleep. Furthermore, it was 90 out, 94% humidity and I had bennadryl in my for allergies.
Any idea what happened to me?