This image is really fascinating! The Chinese Body Clock is based on Chinese medicine and the body organ Qi(energy) cycle. The flow of energy works in two-hour intervals through your body and every two hours a particular organ system will be operating at its peak and will be more dominant.
So try to plan your day to work WITH your body.
See more at: http://yoganonymous.com/infographic-explore-your-human-body-energy-clock#sthash.HuDCHt6W.dpuf