I have had to swear off the wheel or upward bow (Urdvha Dhanurasana) pose after 5:00 pm. Whenever I’ve done it at an evening class, I have been unable to get to sleep that night. It became to be one of my favorite poses because I’ve been able to get into the pose only the past year and every time I do it, I can go a little deeper. But it’s just too intense for late in the day. It’s as if I drank a couple of double expresos before bedtime, a jolt of energy. I substitute Bridge (Setu Bandha Sarvangasana) pose, instead.