What does 'u'mafli la'asot' (does wondrous things) in Asher Yatzar refer to?

Synopsis

Multiple interpretations exist: (1) Rashi and Tosafot — man is like a bag full of air yet holds spirit despite many holes; (2) Mechaber — God separates good from food and expels waste; (3) Rema — God binds a spiritual soul to a physical body; (4) Aruch HaShulchan reconciles the Rema's interpretation via the spiritual nourishment in food.

Early Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

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