
Figure 3 is just for fun...almost impossible for me

But yep...2 is very popular...I would say the earth gravity moves the body in such a way

To keep position 1 it is better to use a reminder and check your body position on some regular intervals. For example Children's Care - Take care for your children using a computer
I'm almost certain that #3 is a homicide victim..the crime scene investigation crew will arrive shortly to determine time of death.