Vastu rule #2: The wealth god resides in the east.
Scientific explanation: Morning sunlight is a rich source of Vitamin D and UV rays. As we all know, Vitamin D is crucial for bone formation and UV radiations protect us from severe diseases. Moreover, absorbing morning light is easier as it’s less heat and more light. If you have windows in the east, open them in the morning to let the sunlight in. The rays will boost your health. If windows are placed in the opposite direction, it could affect your health as the afternoon rays contain harmful infrared rays.