About two months ago, I was riding on the back of a dune buggy, hopping from one postcard-perfect beach to another, basking under a hot and glorious midday sun with my husband and a few friends.  We were cruising around a tiny Brazilian seaside town, I was having the time of my life.  It was a…

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"I'm just feeling really antsy," Kayla told me. She fiddled with the straw in her iced latte and sighed. "I'm ready for this to be over and for me to start working again." We were sitting in our usual spot - the coffee shop that's central to both of our neighborhoods - and having our…