the location of a blood source viewed in three mis as determined by projecting angleso part of individual bloodstains

the direction of blood droplets can be determined from the shape of that it formed when they hit the flat surface. the tail of the elongated drop points to the travel Direction.this droplet was traveling from bottom left and upper right the victim may be somewhere in the lower left.

Explanation:

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.