From what I’m getting out of the paper, it’s more like 'students who work out regularly are less likely to get really bad hangovers.' I’m not sure I buy that regular exercise actually lowers the pain of a hangover if you’re drinking the same amount. For me, working out tends to make me feel tipsy faster, so I usually end up drinking less anyway when I do.

> All participants did at least 30 minutes of moderate physical activity per week.

Is 30 minutes of moderate physical activity per week really "regular exercise"? Seems to me mowing the lawn once a week would qualify.