Hi, on a recent charity spin, 100k, I went well out to 80k averaging 5k intervals from 30 to 37 kph. Kept with a group that really was above me level for the first 55ish. Then and rather sudden I dropped off and never felt as bad on a bike. I done the last 20k barely and at a 20k average. I felt like given up. Week, dizzy, sick and cold. I could not warm either.
I know I don't get enough miles in but over the summer that will hopefully change. I thought I eat well the delay before and on the day. With two packs of power sweets on the cycle, gels don't do it for me. Don't understand what happened to me or were I went wrong.
Any help appreciated!