What are cylinders in a car? They are the hollowed out shapes/areas in the motor block, which the pistons move up and down through. The petrol is let into the cylinder, when piston pushes up, the petrol eâ¦xplodes and pushes the piston down. The bigger the cylinder the bigger to push, the more powerful the motor.
1 One in 200 American women suffers from anorexia. 2  Two to three in 100 American women suffers from bulimia. 3  Nearly half of all Americans personally know someone with an eating disorder (Note: One in five Americans suffers from mental illnesses.)  An estimated 10 â 15% of people with anorexia or bulimia are males.
1 About 8 million adults have PTSD during a given year. 2  This is only a small portion of those who have gone through a trauma. 3  About 10 of every 100 (or 10%) of women develop PTSD sometime in their lives compared with about 4 of every 100 (or 4%) of men. 4  Learn more about women, trauma and PTSD.