these shapes DO work, and just fyi - the ones posted have been patented by the institute for biogeometry for many years now. avyaktam, you would probably be very interested in checking them out.
www.biogeometry.com
one suggestion - the two straight lines should be at 90 degree angles to each other for maximum effect
these are some basic shapes, and there are more advanced ones for different applications. dr. ibrahim karim has taken this body research very far and i would highly recommend his work to anyone interested in shape energy and the actual scientific relevance contained within it. i attended one of his classes in 2001 and it was WELL worth going.
happy researching