I've been doing triathlons for two years now, and in that time I've done a lot of reading about the best way to do things. What is the best workout strategy to build up your ability, to get faster, to go longer? What are the best things to eat and drink? How much rest should you take to be maximally ready for a race? I've taken a crash course in sports medicine.
My conclusion: nobody knows nothin'. Everyone's got a theory, most of them stated with utter confidence as God's truth, but few of them backed up with anything close to rigid science. Even where there is a study behind a recommendation, it's usually only one, and that's just not enough. Even in physics -- in theory the most "mathematical" of the sciences -- finding's aren't accepted until they are repeated many times. When it comes to anything involving human beings, where there will always be a zillion variables (from the length of your femur to what you had for breakfast 2 days earlier) and an inability to treat people enough like lab rats to eliminate them all, there's just no way that you can be sure that anyone's theory about how to approach sports is right for you.
To take just one example, everyone who does triathlons and other endurance sports hears about how lactic acid buildup is what makes your muscles burn and get tired, and that you have to do workouts based on your "lactic threshold" and so on. But then I open up my New York Times one day to read that that's all wrong.
My advice is to:
- Read up on all the theories (for every theory there's usually an equal and opposite theory), and file them away. If you come across any studies, great, weigh those more but not too much.
- Pay a lot of attention to anecdotal reports of what real human beings tell you has worked for them. But these are only data points -- people's own conclusions about what works for them can themselves be way off because -- again -- there are always too many variables, and people tend to lock in on certain perceived patterns way prematurely, with way too small a sample size of their own experiences. (This is why science is based on studies, not anecdotes.)
- Don't take all the science too seriously, generally you won't find
useful answers there. That's
not to say it can't be useful, of course. For example, to get back to the
"lactic threshold," even if that theory is completely wrong in describing what goes
on in your muscles, that might not matter a bit if the workouts you design
based on that wrong theory are ones that work. Philosophers of science debate
the merits of what are called the "Realist" and "Anti-Realist"
positions, with the former claiming that (say) electrons are real
entities, while the anti-realists say we have no idea if they're real,
but it doesn't matter what's really going on in there as long as our
concept produces useful descriptions and predictions of our
observations. To take another examples, Chinese acupuncturists talk about manipulating the Qi or Chi, some invisible "life force" supposedly flows through our bodies. I'm sure there is no such thing, but if it serves as a heuristic device that accurately guides the relief of pain, then who cares?
- Above all, try to figure out what works for you.
It is possible, that if I were to really study academic sports medicine, I would realize that that I'm being a know-nothing, there is a lot more certain knowledge than I realize, and that my impression is due to the fact that I've done most of my research on the Internet. I'm open to that but it sure doesn't look that way from here. (I guess I'm kinda applying my theory to itself here -- my theory about not trusting theories should itself not be trusted. Go snack on that one :)
In general, it consistently amazes me how bursting with confidence people are when they proclaim theories they should be a lot more circumspect about. That applies not just in sports but in all areas of life to everyone from doctors and other experts to taxi drivers. But I guess that's an observation as old as Plato...