That's exactly what I've been noticing with myself. As time passes from my last meal, I start becoming more productive, I can read faster, remember many more th

That's exactly what I've been noticing with myself. As time passes from my last meal, I start becoming more productive, I can read faster, remember many more things... I feel like my brain weights less. On the other side, just after having had lunch I need to have a short nap, otherwise it takes me like 1h to be fully operative again.