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You seem to be in the right track about the mind/body connection. Daniel Siegel has this to say about Intuition (see the "The Mindful Brain"):

Intuition seems to involve the registration of the input from the information processing neural networks surrounding our vicera; for example, the heart, lungs, and intestines. Our body's wisdom is then more than a poet's metaphor, it is a neural mechanism by which we process deep ways of knowing via our body's parallel distributed processing surrounding these hollow organs. This input registers itself in the middle prefrontal cortex and then influences our reasoning and our reactions.

This was the only index on Intuition in that book. Going by this definition of intuition, you should feel it in your chest or abdomen not your knees. But I'm really new to this, so I'm not going to claim to know anything:-)