Until recently I exercised hard six days a week, and sometimes I had these nights when I was really tired. I cut back to four days per week, and those almost disappeared.

I'm now training harder for my upcoming century, and last night I had another one of those nights. I was falling asleep while watching TV, went to bed an hour early, and slept for nine hours.

I'm eating plenty, with lots of vitamins and minerals. On yesterday's ride (March 10) I ate more carbs than I usually do (.5 quest bar, 1 larabar, 1 pack of salted peanuts). I felt pretty good during and after the ride, but after dinner I was just dragging around.

So my question: is this overtraining or am I just getting old?

If it's overtraining, then perhaps to meet my weekly goals I should do two long rides per week rather than three shorter rides.

Advice?

Here's my schedule and training plan: