Comment by 8372049

It's worth emphasizing, which they also do, that this primarily affects middle-aged to older people, and "extreme" conditions. There is no benefit to "stay hydrated" beyond not being dehydrated and in fact it can be somewhat harmful to drink too much water. If you are middle aged or above, if you are in an excessively warm or cold climate, if you do great physical exertion etc. you may need to be mindful of your water intake and make sure you drink enough (and not too much), but generally your body will regulate this through the sense of thirst. Obviously being too focused on your work can also mean you neglect said thirst, so frequent breaks are healthy for several reasons.