Especially when they are everyone else's!
Gord and I went to the gym this evening and it was packed! No ellipticals or treadmills were available.
So I did 15 minutes on the stepmill ... 7 minutes on "manual" at level 5 and 8 minutes on "fat burn" at level 5. It's a lot harder than it looks! Then I did 30 minutes of HIT strength training.