Thermal/Mineral Springs (pandemic loser, future winner): One of the fastest-growing wellness markets from 2017 to 2019, with revenues rising from $56 billion to $64 billion (6.8% annual growth). Hit hard by the pandemic, revenues fell -39% in 2020, shrinking the market to $39 billion. There are now 35,099 hot springs establishments across 130 countries. The downturn is temporary: Very strong 18% annual growth is expected through 2025, with 140-plus new projects in the pipeline.