[kaliali]

Conclusion: "A routine (hot-to-) cold shower resulted in a statistical reduction of self-reported sickness absence but not illness days in adults without severe comorbidity."

So less people were sick but everyone still took just as many sick days. Hmm....

[ericskiff]

I think you got that backwards. Just as many people reporting being ill (illness days), but the cold shower group went to work anyway more often (sickness absence).

[kaliali]

Ok that makes more sense. The word sickness absence is a bit confusing.