Contrary to popular belief, even if you're in great shape, you might still find yourself out of breath when going up stairs.

so don't dawdle about carrying it up the stairs and unfolding it in the room. Lay the boxspring flat on the floor and place something heavy on it to encourage it to start straightening out.

While approaching stairs, you're not warmed up -- your muscles are cold, your heart rate is low and your body is not ready to move suddenly. When you start climbing, you're essentially doing ...