Fight off the Sunday blahs?

Did my usual Sunday morning workout (pilates class, treadmill torture, arm weights), and to add into the mix, I'm going rock climbing in a few minutes. I know, I'm a little worried my arms are gonna crap out on me, esp since I did weights just a couple of hours ago, but I'm going to give it a go. I also realize this could complicate things at my SONY appt tomorrow after work (they show you how to use your SONY product, at the Sony Style store, so I have an appt for a session with my NEX-5), esp if I have problems using a stapler again tomorrow at work. And, as if that wasn't enough, I'm also ready for a nap, and it isn't even 4pm yet. So many things working against me, but I want to see how far I can push my body. I'm tired, but I'm not going to sit around and wait for the Sunday blahs to set in.