fitness guru

Translations
гуру фитнеса
He follows the advice of a fitness guru to stay in shape.
Он следует советам гуру фитнеса, чтобы поддерживать форму.
Definitions
A fitness guru is an expert or highly knowledgeable individual in the field of physical fitness, exercise, and health, often providing guidance, advice, and motivation to others seeking to improve their physical well-being.