Walking out of the Santa Barbara Salt Cave in Santa Barbara, California, my fiancé, Jordan, and I both felt salt on our lips—much like you do when you get out of the ocean after a long swim.

I thank my body for telling me something was wrong,” said Dr. Winslow. In February, Dr. Winslow opened a salt cave in Carmel to further her health. Carmel Salt Caves & Spa features an infrared ...