Tryptophan is an amino acid present in several food items, including turkey. It's given credit for those naps people have been known to take after a big turkey dinner. TryptoDan, on the other hand, has a slightly different connotation.
Dan is managing to sorta, kinda, mostly stay with the medium and fast kids today at Lake Medina. That's almost unusual since he's been slowing down in recent weeks. Blame it on the cold weather as well as an ongoing sinus issue. Not to mention running a lot at other times. There's less than a mile to go and wham! He's horizontal. Those bumps in the pavement had gotten him again.
No, it's not the first time. There was this fall in the same spot last September. And then there was that one just the other day in Buckeye Woods.
It's tough to be a good runner when you're horizontal. In fact, you could say that staying vertical is a critical success factor for experiencing a good run.