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!
Mini Review

The role of near infrared radiation in photoaging of the skin

Abstract

Infrared (IR) radiation is non-ionizing, electromagnetic radiation with wavelengths between 760 nm and 1 mm, which is further divided into IRA, IRB and IRC. IR accounts for more than half of the solar energy that reaches the human skin. While IRB and IRC do not penetrate deeply into the skin, more than 65% of IRA reaches the dermis. Human skin is increasingly exposed to IRA-radiation; most relevant sources are (i) natural solar radiation consisting of over 30% IRA, (ii) artificial IRA sources used for therapeutic or wellness purposes and (iii) artificial UV sources contaminated with IRA. As part of natural sunlight, IRA significantly contributes to extrinsic skin aging.

This article reviews the cutaneous effects of IRA-radiation, the underlying molecular mechanisms and the available protective strategies.

Keywords

Infrared
Matrix metalloproteinase-1
Skin
Reactive oxygen species
Antioxidants
Aging