According to feng shui principles, it is generally not recommended to sleep directly underneath a ceiling fan. This is because the energy from the fan's movement can disrupt the natural flow of chi or energy in the room, potentially causing discomfort or restlessness while sleeping. From a feng shui perspective, it is believed that the steady flow of air from a fan can create excessive movement in the bedroom, which hampers tranquility and relaxation. It is advised to position the bed in a location where it is not directly under the ceiling fan.