DOT physicals is much like any general health checkup. The examiner will check your blood pressure and heart, your lungs and throat, and perform vision and hearing tests. In addition, you will undergo general neurological tests on your reflexes, dexterity, balance, and speech. Prioritize a healthy lifestyle in the days leading up to the exam, including avoiding excessive caffeine, alcohol, and salty foods. Bring necessary documents like your medical records and a list of medications.