Bio-mechanics of Gait was always a common topic but understanding and remembering the kinematics (angles) and kinetic (muscle work) was always difficult for most us during graduation of physiotherapy. Kinetics ? Kinematics ? Graphs? GRF ? ohhh its so difficult and confusing. This poor understanding of the subject haunted us throughout our professional life. Here we will be explaining you in very simple terms and make you understand and remember it throughout the life. You will never forget it later.