As far as bent knees are concerned, I tend to think of them as "unlocked". Not so much as something as a "horse stance", just slightly bent.

And regarding emotions coming out, meditation is like a magnifier, if a person is really depressed it can make it worse. There are times when our practice can increase what we feel deep inside, like pent up emotions.
And I agree, sexual feelings can increase as well. ;\)

JEFF


Without desire there is tranquility. And in this way all things would be at peace. -Lao Tzu