A method and apparatus for Activity Environment Generator (“AEG”) is provided. The AEG allows a user in a variety of settings such as: domestic settings, office chairs, TV chairs, train seats, airplane seats, domestic or hospital beds. The AEG is particularly useful in the fields of rehabilitation, physiotherapy, injury prevention, falls prevention, training and wellness in general and may also provide recreational and/or entertainment elements. The AEG provides dynamically controllable forces with which the user interacts in the course of his/her activity. In one aspect of the invention, the forces provided by the AEG are generated by a magnetic field. In another aspect of the invention, the forces provided by The AEG are generated by a pneumatic actuator. The AEG is optionally scalable and/or modular and, in specific embodiments, may include one or more of the following: a Remote Trainer, an AEG-Accessory, an AEG-Wearable, optimization by Big Data and machine-learning.