If mind acts upon matter, and I have free will,
I can put more energy into the physical world by deciding to do a little boogie.
( Comma, Sat 16 May 2009, 15:48, archived)

that might be poetic energy,
but it's not really physical energy. Dancing doesn't violate the law of conservation of energy, whether it's by free will or not.
( Moon Girl Technologies horrendous beanbag, Sat 16 May 2009, 15:49, archived)