What not to do when working out

Start on the prettiest elipitical and set it for "weight loss" and medium speed. Just saying when you haven't worked out ever, you probably won't last...umm 10 minutes before you heart felt like it was going to explode out of you chest. Other than the first 10 minutes...I did enjoy some walking, treadmill and some swimming. I do have a feeling that I am at the certain age where I'd better take some Advil before bed. It was a gorgous elipitical though.