A famous cycling reporter took drugs for a month to see just want the effect was and apparently it was like being superman. He would go out and ride 100 miles (something that normally leaves you in couch mode the next day) and be ready to do all again the next day like he hadn't even touched the bike the day before.
http://www.amazon.com/The-Doper-Next-Door-Performance-Enhanc...
HGH and EPO are the drugs we have all heard about but I'm sure there are 8 we haven't heard about yet. Also this book gives you insight into the violence we are seeing outside of the gridlines in the NFL. Apparently all of these drugs running around in you makes you crazy in a lot of cases.
Science requires us to be more careful in our thinking than we are naturally inclined towards. It does not require us to pretend we have a lobotomy, nor does it require that we pretend that we must seriously entertain the hypothesis that large doses of steroids have no effect.
http://fivethirtyeight.com/datalab/the-rate-of-domestic-viol...
You've really misrepresented the article.
I did make the comment from the comparison to the general population though.
edit: I have to say, I'm pretty ticked off you accused me of being dishonest. My one sentence blurb is a reasonable response to the context from the parent comment to mine, where the NFL players are claimed as a group that is more violent than normal. There is certainly room to point out that they have cohorts where they don't compare well, but it is not outrageous to answer an assertion about how they compare to people in general with an analysis of how they compare to people in general.
Also, as toward the 2 hour marathon, drugs that are psychoactive may be of as great a benefit as the physical ones. Not just caffeine and other placebos, but getting into the right 'head space' is just as important to breaking such records. LSD was an integral part of one of baseball's no hitters, a terrific feat of athleticism. Many feats of the mind may be broken in Washington state due to the permissive pot laws.
My wife put together a together a pretty interesting video about the "faustian bargain" which is IGF-1 (used as a proxy measure for growth hormone)... video is replete with examples of the effects of low IGF-1/GH or high IGF-1/GH both in animal models and humans.
One of the more interesting points in the video is the fact that people with polymorphisms that make their IGF-1 receptor experience some slight loss of function actually live longer (in general).
https://www.youtube.com/watch?v=AjSl4n_KdOY
The video also links to an article which has a bibliography if you're interested.
For example, reaction speed correlates with longevity: http://www.ncbi.nlm.nih.gov/pubmed/16079205 Reaction speed needs muscle power and neural signal power, both are supported by IGF-1.
Arm grip in midlife is stronger for centenarians: http://www.ncbi.nlm.nih.gov/pubmed/21541735
Thus, while entertaining, the video of your wife is too quick to jump to conclusions.
Number of heart beats per life of regular animal is about 1 billion. Humans average 2 billions. We use different longevity modes than rest of animal kingdom, I think.
HGH is also essentially a stress hormone that for the most part you want to keep as low as possible. It can speed healing and recovery but is tied to cancer and aging in general. Lowering growth hormone in lab animals makes them live longer. I think HGH supplementation is maybe a popular myth that in practice isn't much used. This is what the Balko guy has explained post prison release. He says it's pretty much all about the androgens and HGH isn't very useful.
I don't know anything about EPO dangers. Presumably it leads to thrombosis, strokes, and heart attacks.
Bostin Loyd is actually honest and discusses gear -- see eg [0:2].
[0] http://www.youtube.com/watch?v=dmPI_kX3oDE
2 - if you legalize drugs then you require drugs (of anybody who wants to be competitive). Literally all professional cyclists use all the drugs they're allowed, and some they are not. On terms of caffeine this takes the form of a megadose towards the end of a race delivered via a "finishing bottle", which is a melange of caffeine, sugar, and painkillers.
2- Ewwww....
I'd expect the next generation of drugs will focus on things like improving monocarboxylate transporter throughput/efficiency.
But, as sibling answers say, decreased training recovery times is incredibly important. Steroids also protect your joints -- they are an anti-inflammatory. Runners' knees, ankles, and spines take a pounding.