It's a pretty good resource and that guy's voice just seems so calming!
I know this may sound silly and perhaps you may have considered it, but it doesn't take a lot of coffee (caffeine) to give me the jitters (ramp up my anxiety, heartrate, sweats, start thinking in circles, etc.). Don't get me wrong the amp from caffeine helps me think/operate when I'm sluggish, but I've experienced the other end when I'm beyond the "good" zone. The thing that saved me was learning to recognize when it's happening.
Well, you can use your free time at work to hang out on Windlyn! LOL