When you're at the gym slogging it out on the elliptical machine's hill program and feeling a bit sluggish compared to the girl 2 machines down who is just going to town........check her screen to see what program she is using. She may have a totally blank screen and not using any program AT ALL (not even manual).
Hill program vs zero resistance.....hmmmm.....lol! :)
*not that you should ever compare yourself to anyone else, especially at the gym......but sometimes certain details can put things in a different light :)