A randomized controlled trial in Brazil using an LED jacket emitting 940nm infrared light for 15 minutes daily for 7 days resulted in improved oxygen saturation, deeper/longer breaths, improved heart and respiratory rates, and improved lymphocytes in patients.

“they used 15 minutes of they actually made this jacket that they put on the patients and they flipped it on with some patients and they didn't flip it on with others they they the jacket was a light jacket it was an LED jacket that was giving light out at 940 nmet infrared light so you can't even tell if it's on and as I said the the the Mills per square Cen was like 2.9 so you wouldn't even feel it but yet these patients when they were done 7 Days 15 minutes a day they had better oxygen saturation they could take deeper breaths longer breaths they their heart rates their their respiratory rates improved even their lymphocytes improved the the ones that are very important for fighting off covid-19”