Let the sauna heat up until the thermometer reaches 100 degrees Fahrenheit. The greatest benefits of infrared therapy comes from directed light rather than ambient heat. Point your infrared lamps directly at your body and maintain a distance of 12-18 inches from the bulbs.
If the air temperature is 100 degrees Fahrenheit with 55% humidity, for example, the heat index is 124 degrees. You feel much hotter because your sweat won't evaporate as easily. Conversely, if the heat index is lower—say 15%—that same 100 degrees actually would feel like 96. You can view the heat index chart at the National Weather Service
Whether you’re visiting an infrared, traditional, or steam sauna, it’s essential to keep the fluids in your body balanced. You should aim to drink two 8-ounce glasses of water before and after every sauna session. If the temperature inside reaches 180 degrees or more, then increase that amount by one glass for a total of 5 glasses per visit Leppäluoto: Recommendations are for a sauna temperature of 80–100 degrees Celsius (176–212 degrees Fahrenheit). If you’re using a sauna at your gym, you might not be in control of its temperature. This boosts your metabolism – the rate at which you burn calories. Experts estimate that the high heat of a sauna (around 150 degrees) will boost your metabolic rate by roughly 20%. This effect will last while you are in the sauna and for a couple of hours afterward. To keep the fat burning effects going, try to work up to a 30 minute sauna . 68 193 118 392 244 42 213 359

how many degrees should a sauna be