Which type of twins are likely to interact with each other in the womb
a. non-identical
b. identical
c. neither

b. Identical

Identical twins as a matter of fact. Identical twins are also called monozygotic babies. They came from one independent egg cell which was fertilized and then develops to become into two separate embryos. In the cases which can specifically involve interaction between these two embryos is monoamniotic twins which share the same amniotic sac and conjoined twins which can cause direct contact from their bodies. These types of identical twins have a higher change of contact and interaction between each other in the womb.  

Communication. releasing emotions/feelings to someone you know you can count on. ; ) someone who may not understand but willing to listen.

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle