 The purpose of this study is to determine the effects of TMS on the ANS. The investigator will determine whether single-pulse TMS of the primary motor cortex in the dominant hemisphere in healthy, young adults will affect 1 heart rate and heart rate variability, 2 blood pressure and 3 baroreflex function. This study is foundational in that it will begin to characterize how single-pulse TMS affects the ANS in healthy adults. 