Office Massage Effects on HRV and Stress

Inclusion Criteria: Biological females aged 18 years or older. Currently working in an office job with at least 75% of the working day spent sitting (sedentary work). Self-reported regular menstrual cycle (cycle length 21-35 days). Able to attend all scheduled intervention sessions (8 sessions over 4 weeks). Able to provide informed consent to participate in the study. Exclusion Criteria: Current pregnancy or breastfeeding. Diagnosis of cardiovascular diseases (e.g., heart failure, cardiac arrhythmias, deep vein thrombosis) or presence of a pacemaker Endocrine or metabolic disorders (e.g., insulin-dependent diabetes, hyperthyroidism, or other thyroid dysfunctions) Active cancer or receiving active cancer treatment (e.g., chemotherapy, radiation therapy) History of major surgery or trauma in the head, neck, or upper extremities within the last 3 months Current diagnosis of a major psychiatric disorder (e.g., major depressive disorder, bipolar disorder) Regular use of medications affecting heart rate or the nervous system (e.g., beta-blockers, ACE inhibitors, antidepressants, anxiolytics, or asthma inhalers) Current participation in another interventional clinical trial