We aren't built to 'fast' in that sense. In the cave man days we would probably eat what was dragged 'home' and then sleep to digest so that the body did it's work. In the same way as we would get up at dawn and go to bed at dusk, no torches and for safety reasons. It's one of the reasons why people don't like scuttling critters, i.e. spiders - the fight/flight response is inherent.
I try to keep to every 3 hours. I have to avoid the sudden hunger dip which makes me feel sick or I go into panic mode and it can take days to pick up again

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My go to pick-me-ups still are: dried fruits and nuts. Bananas. Muesli bars. Chocolate.
Dextrosetablets - when my sugars are low it fizzes in my mouth

. I was advised to have dry biscuits (Rich Tea) by the bed. At the time (1980s) I had a pup who needed to wee in the early hours, she soon learned to wait by the bed because there were biscuits ;-). DH never heard a thing

. Some people find that Kendal Mint Cake helps but I can't abide it

. Dried chicken pieces lightly fried with rice when I'm not able to eat: a good mix of veg. when I can.
Let me know how you get on. If you think of a baby or toddler in the supermarket at lunch time? Grumpy, screaming, miserable, probably due to being hungry.
