Positives

• A Long COVID patient reported waking with a clear head and feeling energized the day after a 40-minute infrared sauna session, with two consecutive nights of better sleep Floating-Point.
  
  
• Patients on Health Rising forums report 2-3 weekly infrared sessions contributed to becoming mostly symptom-free when combined with other strategies Health Rising.
  
  

Negatives

• An ME/CFS patient reported that an hour under an infrared lamp triggered hours of vomiting and 1-2 days bedbound, and another patient was wiped out for 3 days after a single 20-minute session Health Rising.
  
  
• Patients with PEM commonly describe the heat as too hormetic and report needing to start at as little as 5 minutes before increasing tolerance Health Rising.
  
  

Hurdles & Side Effects

• Wearable infrared sauna blankets typically run $400-$700 and patients commonly report needing several months of careful titration before drawing conclusions Health Rising.
  
  
• Patients must lie still inside a fully enclosed heating wrap for 20-45 minutes, which is challenging for those with claustrophobia, MCAS, or thermoregulatory issues Bloomberg.