remembering what I did last Monday

A few minutes ago, as I was recording my tasks for the week in our office "work monitoring system", I noticed that I signed out relatively early (around 6:30) last Monday. However, I can't, for the life of me, remember why. Did I go jogging after work? No, I did that on Tuesday. Did I have a date? I would have loved that, but no again; nobody to date. Oh, now I remember! I went to a pre-climb meeting, to plan for the climb I'm joining this weekend. Now, why did I forget that, when I drove all the way to Makati just to get there? I guess my brain's not yet fully functioning this early in the morning. Or it must be this headache I'm experiencing right now, messing with my memory!