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.
Being overweight and obese is a real problem- 250 million Americans fall into this category and 360 000 Americans die every year from diseases directly related to obesity and unhealthy lifestyle. Heart disease is the leading cause of death among men and women in the US. Domestically, over 1/3 of American children are overweight or obese. 25% of US children spend 4 hours or more watching TV daily instead of being physically active.