It is standard practice for a Jacksonville Florida DUI police officer to administer a Florida DUI field sobriety test known as the One-Leg Stand test. If a Jacksonville DUI suspect does not preform well on the test, the Jacksonville DUI officer will use this against him. However, there are many other reasons why a Jacksonville DUI suspect may not perform well on this test. For example, the original research conducted for this DUI test shows that people that are at least 50 pounds overweight or over 65-years-old, did not preform well on this test. Additionally, Jacksonville DUI suspect may have trouble balancing due to medical reasons or physical disabilities. The Jacksonville suspect may be fatigued or distracted.