Less detail than I hoped but a lot of sources.<p>Be wary of tCDS - no long term studies. Also 'no such thing as a free lunch' - see gwern : <a href="http://www.gwern.net/Drug%20heuristics" rel="nofollow">http://www.gwern.net/Drug%20heuristics</a><p>Not included and should be: very bright light. <a href="http://lesswrong.com/lw/gdl/my_simple_hack_for_increased_alertness_and/" rel="nofollow">http://lesswrong.com/lw/gdl/my_simple_hack_for_increased_ale...</a>