Clumsy or Stupid

I am known in my family for falling up stairs constantly. The same flight of stairs in are house but that does not mean I don't fall up stairs outside of my house. My first day of college I fell up a flight of stairs that was only 5 steps up and dropped my new computer. Thank god it didn't die or I would have been shit out of luck. I think I just never lift up my feet enough when I walk up and end up kicking the stairs instead of going up them then face plant.