What you can experience when you sit in front of a red light therapy lamp is heat that mainly comes from the near-infrared light, which is experienced pleasantly, much like sitting in the evening sun in summer. At the same time, the red light is noticeable, so many choose to sit with it against their back, which makes it easier to read something at the same time, for example.
Del:
What should I think about after a red light therapy session?
Should I use protective glasses during treatment with red light therapy?