Suddenly tweaked my back twice today at the office! The first time was at my desk when I leaned forward and felt a small twinge. The second was at lunch when I bent further down, clearly not having learnt my lesson the first time, and felt a sharper pain that's now lingering with me. I went for a slow incline walk on the warehouse treadmill afterwards and lay down for 15 minutes for the remainder of my break, dozing off slightly.
Not sure about boxing today. My instinct is to call it off, but it's a technical day and the easiest day of the week. Might be able to pull it off with my Cerberus soft belt for support. Will evaluate how I'm moving the remainder of my work day and go from there. It costs $15 to cancel a class if it's less than 24 hour notice, which is my only annoyance about this gym. Will definitely cancel tomorrow's class, though, which typically has a lot of conditioning.