Smiling man and woman taking selfie in gym with dumbs

Capture the infectious positivity of a personal trainer in a gym, smiling as they show the smartphone screen towards the camera. Depict the trainer's friendly demeanor and confident posture, engaging with both the viewer and an unseen client. Employ soft, flattering lighting to accentuate the trainer's smile and convey an inviting atmosphere. Ensure the smartphone's screen is visible and its content is relatable, perhaps displaying workout tips or progress tracking. This image should convey the trainer's approachability and expertise, making viewers feel motivated and intrigued to learn more about their training methods and guidance.