Yoga Nidra, or 'conscious sleep', is a form of restorative meditation. It can restore the body and mind and is ideal for sleep deprivation. It is a tantric meditation practice that induces brainwave patterns associated with ‘rest and digest’ nourishment. Attention is focused on the breath and guided through the body, activating a state of effortless non-doing. It is commonly practiced lying down and meditators may fall asleep, de-focus and let attention ebb and flow naturally.