I also habitually got the 3/3:30 shutdown until I played with diet and times. Living in Southern Europe and working from home, my meal times vary but they'd be

I also habitually got the 3/3:30 shutdown until I played with diet and times. Living in Southern Europe and working from home, my meal times vary but they'd be considered late for US standards (with the exception of breakfast). A late lunch (around 3PM) seems to do away with the mid-afternoon shutdown. Also, at the start of the year, I changed from a healthy-leaning diet to one that consists almost entirely of muesli, lean meat, brown rice, fruits & veggies, eggs, trail mix, rice cakes, water, juice, and things of the like. I even switched to wine (instead of beer), whenever possible.