Infrared saunas can help with weight loss because they can raise heart rate and metabolism, key fat-burning elements.
Sweating has not been established by the medical community as a core contributor to weight loss, but the good news is that sweating utilizes calories. There is more opportunity to burn fat the more you sweat.
An ideal session is 25-45 minutes to burn an adequate number of calories without experiencing dehydration and lightheadedness.
To find out how many calories you can expect to burn during your time in the sauna, you should determine our baseline caloric burn, and multiply that by 1.5.
If you spend 15 minutes in the sauna (with your heart rate elevated), you should expect to burn roughly 23 calories in that time, rather than the nearly 16 you would doing nothing.