I live on a hill. It's not a big hill, it's maybe 300 feet above sea level (where I work) at the highest point.
Every single commute I've ever had included scaling this hill, a 6-9% grade for long enough to get to 300 feet, right? (someone else can do the math if they want)
Every single commute I end up slogging up that hill whether i sit or stand, take it easy or work hard, and I've done this commute more than 200 times in the last two years alone.

TODAY I stood and rode from where the incline became noticeable, stayed standing until i got to the crest of the hill, and did not slog! I flew up that hill. it was awesome.
I'll shut up now.