Can't sleep? Eliana Stein, personal trainer and yoga instructor at the Vidya Institute demonstrates the poses that can help you improve your sleep and get those much-needed zzzs.

Check out the other yoga stories from our series: last month's yoga to improve digestion and yoga to combat PMS

When to do these exercises: Practice this routine before bed. It will not only allow you to fall asleep faster, but will give you a better quality sleep, helping you feel rested and refreshed in the morning.

What you will need:
A chair
Belt, tie or yoga strap
Wall
Folded blanket or large pillow

How to do it: Lie flat on your back, legs stretched out straight. Place left foot on right knee, right hand on left knee, right arm stretched out to the side. Inhale lengthening the spine, exhale and twist left knee to the right. Keep the left shoulder on the ground and hold for 5-10 breaths. Then switch sides.

Why it works: This twist allows you to wring tension out of the body from the head to toe. Be aware that you might feel agitated as you first start to release tension in this pose, therefore making it important to breath into the pose until you feel a sense of calm and roundedness.