Regression is a way of going back to a lifetime you have lived prior to this one. This should only be carried out under strict conditions and with a person who is in a stable frame of mind.
When conducted by a professional consultant who has been practicing for many years, this has many benefits for your daily experience of life.
Progression is the opposite of regression (see above) and so you go forward, with Ian guiding you through your own future. You will see your own path ahead and the choices you can make, from where you are today.
You are still completely aware of your surroundings, which means you come out of your relaxed state remembering what you said and what happened during your session.