Christa Hasenkopf
December 19, 2025
This video is part of: Centre for Health and Healthcare
David Ko is the CEO of Calm, an app for meditation, sleep and stress management. It has been downloaded more than 175 million times worldwide. Meditation sounds like a big, weighty concept, Ko says but it doesn’t need to be.
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Christa Hasenkopf
December 19, 2025