Yoga Nidra for Before Sleep. This 30 minute sleep meditation uses Yoga Nidra techniques to guide you into a deep state of sleep. This is a spoken meditation that is designed to help you fall asleep and ease insomnia. Today’s guided meditation is designed to improve the quality of your sleep and to help you fall asleep. You can also listen to this guided meditation if you have awoken in the middle of the night and you would like to fall back asleep. This voice only meditation is great for relaxation and stress management. Even if sleep does not come, this sleep meditation will give you a much better nights rest than tossing and turning.