Create a vibrant and energetic poster for a YouTube workout playlist

Create a vibrant and energetic poster for a YouTube workout playlist. The poster should feature a bold and dynamic design with a dark background and neon accents. Include abstract elements like sound waves, lightning bolts, or geometric shapes. Show diverse, fit individuals in motion, engaging in various exercises like running, lifting weights, or doing yoga. Use a mix of bright colors like red, blue, and yellow. Prominently display the text 'Ultimate Workout Playlist' in large, bold font. Ensure the design conveys energy, motivation, and fitness.

Avoid any blurred or out-of-focus elements. Do not include any unrelated objects or text. Exclude any muted or dull colors; stick to vibrant and energetic tones. Avoid overly complex backgrounds that distract from the main focus. Ensure that all fitness equipment and people are depicted realistically and proportionately. Do not include any logos, watermarks, or branding elements. Avoid cartoonish or exaggerated features; aim for a realistic and motivational look.