According to Vastu Shastra, the ancient Indian science of architecture, the placement of windows significantly impacts the energy flow within a space. An east-facing window in a sick person's room can be particularly beneficial. The rising sun in the east is a potent source of positive energy. The gentle morning sunlight entering through an east-facing window can uplift the mood, improve circulation, and accelerate the healing process. This is because sunlight is a natural source of Vitamin D, essential for strong bones and a healthy immune system. Furthermore, the vibrant energy of the morning sun can create a sense of optimism and hope, which are crucial for a speedy recovery.