Yoga mats are optional — but bring your smartphone. The latest tutorial from health coaching startup Change Collective is a crash course on meditation for the wary technologist.

Change Collective co-founder Ben Rubin is a pioneer in the so-called “quantified self” movement that measures all aspects of one’s life. Twelve years ago, while still a graduate student at Brown University, he co-founded Zeo, a startup that made a sleep-tracking headband ($400) to give its wearer an insight into sleep habits.More →