Modern gymnasium, bright interior lighting, rows of treadmills, stationary bikes, free weights, kettlebells, exercise balls, wooden flooring, mirrored walls, motivational quotes on walls, athletic young adults, diverse ethnicity, energetic atmosphere, morning or afternoon sunlight streaming through large windows, urban cityscape outside, skyscrapers in the background, healthy snacks and water bottles scattered around, fitness trackers on wrists, sweat-drenched workout clothes, intense facial expressions, dynamic body language, vibrant color scheme, shallow depth of field, realistic texture, cinematic composition.