Can a dip in cold water lift your mood?
Paper: Improved mood following a single immersion in cold water
Kelly et al. · Lifestyle Medicine 2021 · doi.org/10.1002/lim2.53
What the trailer says
Can a dip in cold water lift your mood? Researchers in England had students stand for up to 20 minutes in chest-deep cold sea. Another group stayed dry, and both took a mood survey. After one dip, the bathers' bad-mood score fell by 15 points on average. The dry group's score changed by only 2 points over the same week. Students chose their own group, and all were young and healthy. So this small study is a hint, not proof.