Nearly 20 years ago, my husband and I biked through the German countryside with our small children. We trailed behind as their joyful chatter turned to tears. When we caught up, we discovered our youngest daughter lying in a patch of stinging nettles after colliding with her sister, who had stopped to brush a fly from her eye.
Over the years, our family has shared this story many times. We joke that the experience cured her of any future seasonal allergies—and in fact, she has never had to deal with them.
