An adult's empty stomach is as large as a 0.5 liter can of soda and can expand to the size of a 2 liter bottle, some even up to 4 liters.
Why when you are so hungry, can you forget it if you are doing something bad with concentration?
As if feeling tired from sleep deprivation is not enough, scientists have just stated that not having a good night's sleep can cause obesity.
Recent research shows that hormones that cause hunger for Ghrelin are important for the prevention of obesity and brain-related diseases.