system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Athletes seemingly get better every decade as we learn more about nutrition. Does this mean we truly don't know the capabilities/limitations of the human body?
gpt
There's so much more to learn about the human body.  No question.  

Just consider the amount of conflicting studies re: nutrition and sport-specific training.  In the 80s, carbs were good.  Now, carbs are bad.  In the 90s, fat was bad.  Now, it's making a nutritional comeback with a vengeance.