The technique being used is Positron Emission Tomography. The PET scanner will measure the amount of positrons that collide with the electrons in the brain, and this data will then be analyzed using a computer program that generates a color map of activity in the brain. These colors range from purple (little to no activity) to red (high or very high activity).
You can tell your body composition by simply looking in the mirror.
The last one, A hypothesis is valuable whether or not they were correct or not.
Well, it sounds like the people that are given ive cream are the experimental group. originally I'd say not, but I dont know if pie is considered a cold dessert.