There is a growing body of literature on the impact that COVID-19 has on workers' performance upon recovery. This paper explores that question using granular data from professional athletes. Using a difference-in-difference estimation strategy and estimating an n-dimensional performance index, we find that performance drops upon recovery during the first thirty days aer infection by 13,4%. Exploiting the mountainous geography of Colombia, our results indicate that the main driver of such a drop is performing at high altitudes.
