It really is not easy being the president of the United States, as Obama's physical appearance has shown.
In a series of photos shared by Acidcow, the US president has visibly aged since 2009.
A photo shows Obama at 47 years old when he gave his State of the Union Address in 2009, and another shows his recent address in 2016.
At 53, he looks way more tired, seems to have a more wrinkles and definitely more grey hair -- completely worn out.
It was a far cry from his perky self in 2009.