유산소 운동
GPT Image 2· Image
A square visual guide to cardio exercise in a bright modern fitness studio, showing a diverse group of adults performing distinct aerobic activities in a clean four-zone composition: treadmill running, stationary cycling, jump rope, and energetic step aerobics, realistic athletic clothing and believable body posture, clear sense of motion, balanced instructional layout, fresh natural lighting, no text, no logos, no watermark.