Methods. 32 healthy adults (33.9±14 years, and 72% female) were selected. At enrollment, all subjects were randomized in three groups: CV4 group (CV4 technique), Rib Raising group (RR technique), and Placebo group (PL technique). Each subject of each group underwent respective technique only once. HRV and SC was continuously recorded during the session respectively with heart rate monitor Polar S810i and with Onda Scanner Domiana (OSD-Microsale model). All data analysis was performed using SPSS statistical software and the significance level was considered at p≤0.05.