Modern Sweat Lodges are used as a way to build up one's immune system.
When positive and negative ions meet they become neutral and create a balance. This allows our body to heal and our immune system to strengthen. With the use of different herbs in the sacred Fire, different parts of the system can be strengthened.
Herbs like sage, sweetgrass and cedars are commonly burned. Other herbs such as lavender, star anise, red willow, bear root and the resins like copal and piñon can be burned as well. Bear root and bitter root are also chewed in the lodge as an internal medicine.