One of the more fascinating scientific abstracts demonstrating that we do in fact sweat heavy metals out of our body's through various means of deep sweats. Sauna, hot bath, infrared, etc. However it does appear to be of greater importance to do this while not exercising when it comes to detoxification and recovering from more chronic illness. This abstract is very small evidence primarily because there isn't much money in getting people to sweat.
Nonetheless it warrants what most of us may instinctively already know to be true... That we do need to sweat the small stuff (literally but not figuratively) on a near-daily basis in order to step towards more optimal states. That being said, if you like me, are dealing with a chronic fungal infection in your intestine or some persistent and resilient infection like Lyme's then you need to work your way up to length of time and depth of heat as it will likely exhaust you further initially.
Here's a few more good sources to learn more:
"Of 122 records identified, 24 were included in evidence synthesis. Populations, and sweat collection methods and concentrations varied widely. In individuals with higher exposure or body burden, sweat generally exceeded plasma or urine concentrations, and dermal could match or surpass urinary daily excretion. Arsenic dermal excretion was severalfold higher in arsenic-exposed individuals than in unexposed controls. Cadmium was more concentrated in sweat than in blood plasma. Sweat lead was associated with high-molecular-weight molecules, and in an interventional study, levels were higher with endurance compared with intensive exercise. Mercury levels normalized with repeated saunas in a case report. Sweating deserves consideration for toxic element detoxification. Research including appropriately sized trials is needed to establish safe, effective therapeutic protocols." ~ PubMed PMID: 22505948
Always in pursuit and practice of the truth behind the truth regarding the physics of wellness. No dogma, just practical, clinical and scientific means toward a vital life.