I celebrated a rather significant birthday recently. Though, to be honest, “celebrated” is probably the wrong way to put it. I spent the day in moody contemplation, trying to decide if I was going to be one of those salt-and-pepper guys you see in vitamin supplement ads — With NAD+ and creatine, I feel like I’m just getting started! — or one of those old men with a permanent I am opting out of whatever this is look on his face.