Dr. Dan Engle is Board Certified in Psychiatry and Neurology, with a clinical practice that combines functional medicine, integrative psychiatry, neuro-cognitive restoration, and peak performance methods. He lectures and consults globally and is the medical advisor to Onnit Labs, the True Rest Float Centers, and several international treatment centers using indigenous plant medicines for healing and recovery. His other programs include: Freedom From Meds and Full Spectrum Medicine. Dr. Dan Engle is Board Certified in Psychiatry and Neurology, with a clinical practice that combines functional medicine, integrative psychiatry, neuro-cognitive restoration, and peak performance methods. He lectures and consults globally and is the medical advisor to Onnit Labs, the True Rest Float Centers, and several international treatment centers using indigenous plant medicines for healing and recovery. His other programs include: Freedom From Meds and Full Spectrum Medicine.