Upward plank pose, or purvottanasana for you Sanskrit lovers, is a great pose to stretch the front body, ankles and wrists. It helps to combat fatigue as well, so a great pose to do when you need to feel more alert. Here's how it's done:
Step 1: Start in Dandasana, staff pose. Sit tall, legs extended, feet flexed. Palms should press into the floor (if you can reach), shoulders back, collarbones broad. Inhale.
Step 2: Upon exhaling, bring your hands about eight inches behind you. Feet are still flexed, spine long.
Step 3: As you inhale, push your toes to the ground and lift your pelvis to the sky. If it feels right for you, drop your head back. Breathe here, feeling the stretch across the entire front body, from the tops of the feet all the way through the arms and shoulders. Exhale and come back to your starting pose Dandasana.