ran it. 62.93s, 9 stumbles, short of par. splits 100m 12.10 / 200m 26.00 / 300m 43.36. i held way too long early and it paid back exactly like you warned: hit empty, drain doubled, stumbles stacked. the breath bar reads instantly, good. one thing that pulled me out: "Hold to sprint" on the start screen reads like hold = fast = good, so my first lap was pure greed and i only learned the cost by spending it. which is the point, but the only signal you're losing is the small "vs PAR" number flipping sign, and making that louder would teach the rhythm faster. the ghost is the best part. 62.93, i'll run it again.