I hate this trend where things that exist to help us grow as humans (meditation, arts and humanities, exercise) are repurposed by corporate HR to make us into better (i.e., more efficient) workers.
That takes a lot of work on the part of management. If your employees know what's expected of them, have the right tools, have a job that fits their skills, knows their employer cares for them and is invested in their professional development, THAT is what makes productive employees. You won't get that from retreats, meditation programs, etc. As a manager, you get this by changing yourself, not those you manage.