The important sentence from the abstract: > In conclusion, our data suggest an adaptive GM upregulation after 5-day CSR, while concomitant use of caffeine inst

The important sentence from the abstract: > In conclusion, our data suggest an adaptive GM upregulation after 5-day CSR, while concomitant use of caffeine instead leads to a GM reduction. I'm not sure what to take away from that. It sounds bad, though.