# References

1. A. Maaso, A.N. Hagen, “Metrics and decisionmaking in music streaming,” In Popular CZENTunication, 18:1, pages 18-31, 2020.
2. B.J. Stussman, L.I. Black, P.M. Barnes, R.L. Nahin, and T.C. Clarke, “Use of yoga, meditation, and chiropractors among U.S. adults aged 18 and over,” no 325, November 2018.
3. C. Fox, J. Gordon, P.M. Doraiswamy, “How the Pandemic Is Changing Mental Health,” 2021.
4. D. Curry, “Headspace revenue and usage statistics,” 2020.
5. Gaia, Inc., “Discovering Your Gifts,” 2020.
6. Global Wellness Institute, “Move to be well: the global economy of physical activity,” October
7. Headspace, Inc. \[@Headspace], “The Depression pack has been changed to Handling Sadness course...” Twitter.com, 2019.
8. J. Koetsier, “No selling allowed: how Insight Timer is building the biggest meditation community on the planet,” 2020.
9. J. Pham, “Coinbase Earn Offers: $167 In Free Cryptos For Learning About Cryptos,” 2021.
10. Sales Wallet \[@saleswallet], “Polygon (MATIC) 101 Guide: How To Save ETH Gas Fees in DeFi! Set up Polygon Network on Metamask Wallet,” Medium.com, 2021.
11. The Author(s), Elsevier Ltd., “Global prevalence and burden of depressive and anxiety disorders in 204 countries and territories in 2020 due to the COVID-19 pandemic,” In The Lancet, 398:10312, pages 1700-1712, 2021.


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