Superman Strength (or Lex Luthor Strength?)

Just saw an article at Daily Science about a study linking physical strength to self-perceived morality. The teaser:

ScienceDaily (Apr. 21, 2010) — New research from Harvard University suggests that moral actions may increase our capacity for willpower and physical endurance. Study participants who did good deeds -- or even just imagined themselves helping others -- were better able to perform a subsequent task of physical endurance.

The research, published in the journal Social Psychological and Personality Science, shows a similar or even greater boost in physical strength following dastardly deeds... (Read the rest here...)