Methods, systems, and storage media for generating and displaying animations of simulated biomechanical motions are disclosed. In embodiments, a computer device may obtain sensor data of a sensor affixed to a user's body or equipment used by the user, and may use inverse kinematics to determine desired positions and orientations of an avatar based on the sensor data. In embodiments, the computer device may adjust or alter the avatar based on the inverse kinematics, and generate an animation for display based on the adjusted avatar. Other embodiments may be disclosed and/or claimed.