Participate in medical studies. If just the thought of this frightens
you, know that the intensity of such studies varies greatly. Some studies ask
participants (particularly those with medical conditions) to test treatments or
medications that can have adverse side effects, but others ask participants to
perform physical tasks with no lasting effects. If you are able-bodied and
paranoid about keeping it that way, you can even participate as a control in a
study at a nearby medical research facility or medical school.