As we do not know if you are a motivational coach or a physical training coach, etc, we need more information in order to find the most appropriate business code that fits your business.
As per Canada Revenue Agency (CRA): Industry codes: you would choose the closest industry code that illustrates your main business activity if it doesn't matches the exact description. If you filter the list of industry codes with the subsector "business", the list of the codes will be narrowed down into 4pages.
If you require further assistance please contact our phone support team or contact us directly on Facebook or Twitter.