Too much coffee.
It was all combined yesterday for a disastrous result of my body. By midnight last night I was experiencing the following:
Sick? Nope. Cold? Nope. It was just a mix of all those elements yesterday just wreaking havoc on my body. This is why I have zero issue stating that I slept in today.
Overall what this event tells me is that I’m doing something right. My body passionately rejects poor food and not enough water. While the experience is terrible, I’m grateful that my body is being properly trained.