High-definition (1080p) videos often feature clear sounds of oil being applied, hands gliding over skin, or soft-spoken instructions, which help lower the viewer's heart rate and cortisol levels.
Smooth, rhythmic hand movements over the back and shoulders are used to induce a "tingling" sensation that typically begins at the scalp and moves down the spine.
While the viewer is not physically receiving the treatment, watching a professional back massage can provide significant psychological benefits: