I think its great that he is at Yale, with the discipline to manage his training, his travel, his competitions, his success, and his academics. But, sigh… he rides a boosted board ( its a motorized skateboard with bluetooth brakes… that work unless that battery is full) https://boostedboards.com/nathan-chen?sscid=a1k3_igg58&utm_source=shareasale&utm_medium=affiliate&utm_campaign=314743&utm_creative=1308581 My DS#1 does as well. He (DS) loves it (gets him to/from his bus for work) but DS has already broken a collarbone and a rib on that thing over the years he has had them (he has 2). At least they wear a helmet. And surely Chen has great balance… but still… One bad spill could damage is skating. Skating alone has its injury risk.
But I digress…