The Adho Mukha Svanasana, the downward facing dog, is a great posture for helping you to settle into the present moment.
This posture stretches out the hamstrings and gastocnemius (calf muscles) and latissimus dorsi in the back. It improves circulation to the head and brain which helps us feel refreshed and invigorated. This posture helps us let go of the past and brings us totally into the present moment. On an energetic level, you may be aware of energy flowing from the base of the spine, mooladhara chakra, and up though all the chakras to the crown.