Will I notice a difference after the first session?

In most cases yes, in the same way you would feel and see visible differences after a resistance exercise session. Only this procedure works to a much greater depth of the muscle tissue in a pain free but intense way, once 4 sessions have been performed then the change in localised muscle and body fat will be noticeable throughout the hours of day (not just immediately after). Once 6 – 8 sessions have been performed you will feel and notice the difference every day for around 6 months.