Although various combinations of foods can be eaten together, the energy required for digestion puts a tremendous strain on our digestive system.
(various combinations of foods; can be eaten together; ) (the energy; required; for digestion) (the energy required for digestion; puts; a tremendous strain; on our digestive system)
various combinations of foods the energy the energy required for digestion
can be eaten together required puts
for digestion
a tremendous strain on our digestive system