I am evaluating a notion that stems from a controversial hypothesis of heat stress. The oxygen- and capacity-limited thermal tolerance (OCLTT) hypothesis predicts a positive correlation between the tolerance of hypoxia and the tolerance of heat in animals, where the notion claims that these animals must be metabolically active. To evaluate this notion, I tested heat coma recovery in several genetic lines of Drosophila melanogaster and compared it to data collected in prior studies. I hypothesized that the correlations between hypoxia tolerance and heat coma recovery would be similar to correlations found in Teague et al. (2017) and Fredette-Roman et al. (2020). After testing 65 lines from the Drosophila Genetic Reference Panel (DGRP), the notion was supported and provided evidence for the validity of OCLTT. Additional work is needed to enhance our understanding of the limitations of heat tolerance and doing such will generate more accurate models and predictions on how animals will respond to climate change.