An electronic device includes: a display; a memory storing a health coaching system including first and second sub-coaching models and a manager model; and a processor configured to control the health coaching system to output a health guide, the manager model providing a first coaching request to the first and second sub-coaching models, outputs a health guide including first coaching information, of a first level, from the first sub-coaching model and second coaching information, of the first level, from the second sub-coaching model, selects one of the first and second sub-coaching models as a preferred coaching model based on feedback about the health guide, and, based on a second coaching request query being provided to the first and second sub-coaching models, acquiresthird coaching information of a second level, higher than the first level and acquires, from the other sub-coaching model, fourth coaching information of the first level.