One … two … three … four … This pose was a piece of cake. My foot hugged the wall, my left arm reached high above my head. Five … six … seven … eight … nine … My breathing was becoming labored, my palms sweaty, threatening to slip free from the mat. Ten … eleven … twelve … My right leg quivered, seizing under the weight of my body. And I began to regret eating that donut the day before.