I have a running hangover.

Last night's run was extra rough somehow. Legs felt heavy, harder to breathe than usual --  just not right. Heather and I both got really fatigued and had to walk for a couple of minutes towards the end.

This morning, I totally overslept, and now I feel like I was out carousing all night. My eyes are achey, I have a headache and I just feel generally sore and drained of energy.

What gives, running? I thought you loved me!