You know that what you eat affects your sleep, but did you know that the reverse is also true? Studies now show that people who are sleep deprived tend to eat more fat-rich foods, simple carbohydrates, and fewer vegetables, possibly because sleep loss alters chemical signals connected to metabolism and hunger.
Figure 6. Figure 6 is a bar graph showing the number of main-track train derailments and the number of main-track train collisions per year from 2001 to 2010. In 2001 there were 7 main-track train collisions and 132 main-track train derailments.
Rock 'n' roll derailments are caused when the interaction between a train and its track creates harmonic motion. At speeds between 12 and 24 miles per hour, a freight car can resonate so that it starts rocking back and forth violently.