http://status.nowherejezfoltodf4jiyl6r56jnzintap5vyjlia7fkirfsnfizflqd.onion/productivity/pomodoro/index.html
As you are intentionally winding down your brain activity, on top of mentally dissolving what you were previously working on, and shifting your focus on something else (here, the slowing and deepening of breath and thoughts). If you do it right (meaning, if you managed to dig deep enough), the moment you open your eyes again, you should rediscover what you were working on, as if it was the first time, with a completely fresh view on it.