Weighted Walking is a pair of calf-worn haptic devices for simulating the buoyancy and the resistant force when the human’s lower limbs are interacting with different fluids and materials in virtual reality. By capturing the position and direction of the feet when the users are walking in place, the system can adjust the strength and the direction of the airflow in real time to simulate different directions and levels of forces. The fans can generate powerful thrust to simulate the forces caused by the user’s lower limbs when moving in different fluid mediums (e.g. water and mud). The device can also simulate the walking experience in different gravity conditions, such as walking on another planet.