few glasses of water a day keep procrastination at bay

Dehydration causes apathy. A glassful of water in the time you feel apathic and like better doing nothing could make wonders and surge of new energy.

What you can do to avoid dehydration:

  • drink plenty of fluids, how much depends on climate and many other things 
  • avoid caffeinated beverages (tea, coffee, ...)
  • avoid carbonated beverages
  • avoid alcohol
  • learn to notice when your body is dehydrated and needs more water (this ability is natural but often gets lost through time)
    I don't have the numbers handy,  but read it in numerous sources - dehydration is a rather large problem with our population today, most of the people affected not noticing they are "just" dehydrated in fact.