TMS is a noninvasive method to cause depolarization or hyperpolarization in the neurons in the brain using electromagnetic induction to induce weak electric currents using a rapidly changing magnetic field. TMS is a novel intervention developed in the field of neurology that has been used in the treatment of patients suffering from migraine, stroke, Parkinson's disease, tinnitus and depression. In healthy subjects, high frequency rTMS over the left DLPFC has been shown to alter impulsive choice behavior (to decrease delay discounting) in healthy individuals and in smokers (Sheffer et al, 2013). On the other hand, a trial of TMS by one of the leaders in the field has shown it to be safe and well tolerated in recent suicide attempters suffering from depression with comorbid post-traumatic stress disorder and traumatic brain injury (George et al, 2014).