In the improved version, the daily distance data is visualized using a bar chart, allowing users to instantly recognize patterns, peaks, and gaps across the week. Visual hierarchy helps users quickly grasp performance distribution without reading each value individually. Supporting metrics, such as training zones, are also enhanced with lightweight visual indicators, reinforcing comprehension at a glance. These changes reduce cognitive load and make weekly insights easier to understand, faster to scan, and more engaging, especially in a performance-tracking context. (src: Jakob Nielsen – 10 Usability Heuristics for User Interface Design)