What are the common buddhist practices to eliminate sleepiness? I sleep the hours which are said to be needed, but I still feel sleepy. I've been drinking coffee recently to eliminate grogginess, and it does work for me. However, I was wondering if there are other methods of eliminating grogginess?
Buddha gave his disciple Moggallana a sequence of advice on how to overcome drowsiness during meditation. Moggallana was however continuously meditating for 7 days without sleep when he received this advice. 


  
  Well then, Moggallana, whatever perception you have in mind when drowsiness descends on you, don't attend to that perception, don't pursue it. It's possible that by doing this you will shake off your drowsiness
  But if by doing this you don't shake off your drowsiness, then recall to your awareness the Dhamma as you have heard &amp; memorized it, re-examine it &amp; ponder it over in your mind. It's possible that by doing this you will shake off your drowsiness.
  [..] then repeat aloud in detail the Dhamma as you have heard &amp; memorized it. [..]
  [..] then pull both your earlobes and rub your limbs with your hands. [..]
  [..] then get up from your seat and, after washing your eyes out with water, look around in all directions and upward to the major stars &amp; constellations. [..]
  [..] then attend to the perception of light, resolve on the perception of daytime, [dwelling] by night as by day, and by day as by night. By means of an awareness thus open &amp; unhampered, develop a brightened mind. [..]
  [..]  then — percipient of what lies in front &amp; behind — set a distance to meditate walking back &amp; forth, your senses inwardly immersed, your mind not straying outwards. [..]
  
  
  But if by doing this you don't shake off your drowsiness, then — reclining on your right side — take up the lion's posture, one foot placed on top of the other, mindful, alert, with your mind set on getting up. As soon as you wake up, get up quickly, with the thought, 'I won't stay indulging in the pleasure of lying down, the pleasure of reclining, the pleasure of drowsiness.' That is how you should train yourself.  
  
  AN 7.58