PBS
Pbs Learning Media: Is Lactic Acid a Four Letter Word?
This essay by exercise physiologist Patti Finke and fitness consultant Warren Finke describes the process by which our bodies transform food energy into energy that our cells can use.
Famous Scientists
Famous Scientists: Tim Noakes
A short biography about Tim Noakes, the South African scientist who has run more than 70 marathons and ultramarathons, and is the author of several books on exercise and diet.
Khan Academy
Khan Academy: Lactate Dehydrogenase and Exhausted Athletes
MCAT style passage and practice questions over lactate dehydrogenase and exhausted athletes.