CTA Tattler

I love the train and bus ads soliciting people for medical experiments. It seems us CTA passengers are great research fodder -- from transcranial magnetic stimulation to depression. And I'm not sure why.

Regardless, here's the chance for all you "healthy, overweight women" out there to earn $650.

There are just three other qualifications to meet: You must be age 18-40, have regular periods and not be taking the pill.

Northwestern University is conducting the research study on metabolism. It asks participants to make up to 10 visits to to its research center in a one-year period. In return, you'll be compensated up to $650 and get free blood pressure, cholesterol and thyroid screenings.

In addition, you'll get a "free measure of your metabolism, percentage body fat, and personalized dietary plan by a certified dietitian.

To see if you qualify, call 800-847-6060 or send an email here.