Inclusion Criteria:  Healthy weight (BMI >18 and <25 kg/m2) Obese (BMI ≥30 kg/m2)  Exclusion Criteria:  Pregnancy, breastfeeding Diagnosed sleep apnea or AHI >10 events/hr Current smoking/Nicotine use Increased risk of bleeding, pro-coagulant disorders, clotting disorders, anticoagulation therapy Nerve/neurologic disease Cardiovascular, hepatic, renal, respiratory disease Blood pressure ≥140/90 mmHg Diabetes, Polycystic ovarian syndrome Communication barriers Prescription medications, Sensitivity to lidocaine