Savasana, also called corpse pose, is a yoga posture (asana) that relaxes the entire body and psycho-physiological system. Ideally it is best practiced before sleep, and can also be taken before, during or after any yoga asana practice, especially after a more dynamic sequence such as Surya or Chandra Namaskar.

It can also be taken anytime there is tiredness or fatigue felt in the body or mind.

Savasana will also help to develop body awareness and when it is completely relaxed, awareness of the mind increases, which is the beginning of pratyahara, or withdrawal of the senses.

Lie on your back with legs slightly apart and arms slightly away from the body, palms upright.
A pillow or cushion can be used under the neck or head if there is any discomfort.
The head, neck and spinal cord should be kept in a straight line.
Relax entire body.
Bring awareness of your natural breath, breathing normally and naturally, inhaling and exhaling with no stress.
Try to maintain stillness during the practice of this asana to receive full benefits.