Just want to put this out there for people's thoughts and opinions.
Yesterday I did Parkrun (decent run, though it was quite warm - 29:27). No breakfast before going (I generally am better no eating before a morning run - around the 5k mark). The rest of the day I ate fairly lightly - a sandwich and half a scotch egg for lunch, and grilled cod on coconutty curried leeks with rice for dinner. I also had a protein supplement (worth 20g of protein).
This morning as part of a HM training plan, I did a long run - 80 minutes, 11.65km. No breakfast, no fuel on the run, no water (I carried a bottle on a slightly shorter run last Sunday, and it made my shoulders ache). I felt myself running low on energy at around 10k, and after the run and for most of the day, I've been feeling very tired, especially my legs. I can't remember the last time I felt so tired after a run.
I think I should have paid more attention to what I was eating yesterday, and possibly during the run. I wonder if I didn't properly refuel properly yesterday, and during the run today (which Garmin said cost me 1248 kcals) I didn't have enough energy readily available, and my body had to work much harder to find fuel for the run.
What do you think?