So work got a bit hectic lately and I've forgone running for 4 days . As a result I found it *much* harder to run today (I ran slower and feel more tired).
<delete>My advice to all is only take time off if you *really* cant make it and/or are injured.</delete>
Edit: After having read all the replies on here I must say that perhaps it has something to do with not having slept well a few nights ago (even though I slept well last night; maybe it wasn't "repairing" enough). Cheers!