There was a big mental component to this run today: my (fully charged!) headlamp decided to die 15 minutes into the run, so I had to change my plans. I ran my favorite part of this route in total darkness bc I refused to give up that part of it, but I was initially going slower than usual to be extra cautious about black ice, then because I felt like I was slogging to reach the higher end of my watt targets. I couldn’t figure that out - it shouldn’t have felt quite so hard. I slept well last night, ate well yesterday, and took it easy yesterday (no Monday strength session.) I was a little lower on carbs than usual (~50 grams lower), and I think that might be the culprit. I think it’s time to drop my protein a bit (currently averaging 150 g/day; I lower it to 120-130 g/day when training gets heavier) so I can accommodate more carbs.