A Reiki Session can relieve you of many things. You can ultimately expect relaxation from a reiki session. There are cases in which people reported lesser pain, better spiritual connection, and even no anxiety. Reiki energy also results in better spiritual connection. It still depends from person to person. You should also practice meditation. A Reiki master will guide you throughout the session and you can trust his judgment. The session aims at peace and healing. It can be half an hour long or until you have attained either of the two things. This is the same for in-person sessions as well as remote reiki session.