Both are a de-load.I don't think there is necessarily a big advantage either way. Doing an "workout" de-load is nice since it keeps you in the gym and lets you feel like you are actually doing something. You can also use that time to refine your technique, etc. It also gets some blood moving in the muscles. But there is nothing wrong with just getting out of the gym and living life.75% of the time I'll deload in the gym. The other 25% I'll just take a week off, usually on vacation or something.