because its long run day. well that is not the only reason, but its a big one. i LOVe to run long. to just keep running. and today was probably the best run i have ever had. it just felt amazing. it's hard to explain. but everything clicked. it wasn't difficult, i wasn't tired, my stomach didn't bother me, my breathing wasn't labored, i wasn't rushing it & i wasn't worried about my hydration. it just felt awesome. i definitely had the runner's high today. i really just wanted to keep going. today i ran 18, but i felt like i could have run forever. i can't wait until next week's 20 miler.