Mexican artist Filemon Trevino gave up food, water and sleep as he slaved over his quarter-mile-long pencil drawing. It took him more than a year, but it also placed him in the Guinness Book of World Records.
Trevino spent 6,000 hours and used 800 pencils to complete his drawing of the heart and circulatory system. As the drawing became an obsession, he neglected his health, which landed him in the hospital seven times with dehydration.
He started in July 2004 and finished in Aug. 2005. The finished work had to be put on display for consideration as a world record. It was unveiled in March at the Regiomontana University.