Better to say something, than to not say anything at all. There's a lot of stuff to write about. Me, not applying for 2 cycles, if I saw this, I'd write about certain things that I've done, but not given justice to. Like working at a non-clinical job for the government, and that, while I wasn't out making a cure for cancer, I understood exactly what I did, and helped advance medicine by making it easier for volunteers to find information about clinical trials. Something that sounds good, and wouldn't be evident from your application without detail.