Manna Mania

From the Wikipedia:

As a natural food substance, manna would produce waste products; but in classical rabbinical literature, as a supernatural substance, it was held that manna produced no waste, resulting in no defecation among the Israelites until several decades later, when the manna had ceased to fall. Modern medical science suggests the lack of defecation over such a long period of time would cause severe bowel problems, especially when other food later began to be consumed again. Classical rabbinical writers say that the Israelites complained about the lack of defecation, and were concerned about potential bowel problems.

They used every part of the manna, no shit.

That's manna mania!