There are many mistakes that are made in the gym, especially when just starting out not knowing what to do and thus doing it improperly. That's where a Personal Trainer can be invaluable ;)
Anyway, when I am at the gym I always see at least 2 women (I have not seen men do this, but I am sure they're out there too) making this mistake. I just want to gingerly walk up to them as they pound away for 20, 30, 60 minutes on the treadmill with the incline cranked up to it's highest setting while holding on for dear life and secretly tap the incline button down to something more reasonable for them.
Please, don't "workout" this way! First of all, 99% of the time proper form can not be maintained at that incline without proper training. Second of all, I know those calorie counters may say that a certain number of calories are being burned at that incline and pace, but those numbers are often off to begin with and while holding on for dear life the amount of calories used will not be anywhere near accurate to what that digital readout may say.
So, maintain proper form with shoulders back, chest up, tall and aligned. Walk at an incline that is comfortable for your body and get those arms in on the action to propel each step you take. The workout will be better and safer :)
Have a Fabulous Labor Day weekend...or as my friend Diane puts it have happy labor free day!
Make Everyday Count!!!