At the top of the Cartoon Style image, Merry Christmas

Playful, funny cartoon scene with exaggerated proportions, thick bold outlines, and bright, saturated holiday colors. In a twinkly, holly-decked exercise-science lab, Santa is hilariously sprinting on a sleigh-red treadmill, tiny ankles and big bouncy boots, wearing peppermint-striped knee braces and a jolly sweatband. Motion lines and flying snowflake-sweat droplets show speed. An elf scientist in a tinsel-trimmed lab coat and goggles paces beside him with a stopwatch and clipboard, wires and heart-rate sensors clipped to Santa; charts and icon-only graphs (no words) glow on a screen behind them. A supportive reindeer in matching knee braces cheers from the side, doing an enthusiastic warm-up pose. Santa hydrates mid-run with a fizzing ginger ale in a green bottle, golden bubbles swirling into snowflake shapes; a cooler of more ginger ale sits nearby. The lab is festooned with fairy lights, candy canes, and a mini tree; snow drifts outside a frosty window. Whimsical, energetic poses; dynamic perspective; glossy highlights and cozy winter glow.

At the bottom, a small cheeky caption: Sleigh your VO2 max!

Generated with these themes: Exercise science, ginger ale, running on a treadmill, knee braces , and .

Made with ❤️ by AI.