Even the Best quality Panels of 10,000 Nanometers fall under the rapid aging radiation 1 mm level.
So you get all the negative exposure of the sun at much higher power (10,000 x the suns output) while exercising in a room which usually has artificially low oxygen levels. “hello Skin Cancers and cell death.”
All Infrared heat panels are Infrared A emitters-the worst kind!
The role of near infrared radiation in photoaging of the skin
Reactive oxygen species