Have you ever seen a person age as much as Obama has since 2008?

Regardless of anyone's political ties, the President is obviously under extreme stress. Noticed it throughout the past couple days. His eyes look tired and glossed over (lifeless? no, there is compion evident) and a concerned look that you often times notice in someone deep in thought. His walk appears as if he has stooped shoulders and like a person that has the weight of the world on them. Thing to consider, this President has more stress and bigger issues to deal with than former Presidents. Mainly, he has a very discontented and angry Nation, (his own), to handle and keep united. Just my observation.