the two overweight girls told me to have 6 smaller meals per day rather than 3 larger ones.

there is no linguistic evidence that this is how humans got to where we should be now.  brunch?  teatime? afternoon tea? snack? lupper?  linner?  our ancestors had no clocks, they ate when they were hungry or when the tigers screwed.  they walked miles.  they paused, they ate, sometimes, they ate while walking.  they slept.  no bells, no mayonnaise.