Yesterday had been a difficult day. It included a long climb under a hot sun. A few treacherous sections of trail thrown in didn’t make it any better.
But it wasn’t the most difficult day I’ve spent on the trail, and when I arrived in camp I didn’t feel especially tired.
I didn’t recognize a lack of energy when first woke up, but I soon noticed it. My legs had no energy.
I had felt this before. These situations were usually caused by a calorie deficiency and went away after I ate a snack bar or two.
Today felt different.