Maybe Bolt and Johnson and all are doped, but what do they take and how does it work to make them go faster?

Question

what do you need most of all to run fast? more flexible muscles? bigger ones? what kind of products are available for them and how do they work?

Answer 1

us jamaicans need not take any dope to enhance our speed all one needs to do is to maintain a healthy diet and work on ur weakness in the specified area ur in with hard work comes success!!!!!!!!!!!!

Answer 2

The best answer I think is to assume they are not doped and that natural talent and hard work has made them the successful runners that they are.

Nandrolone and HGH have often been linked to sprinters and their increased performance.  They supposedly allow the muscles to take excess pounding and recover quicker so you can continue training harder and increasing your strength.  However, I believe the medical side effects outweigh the 'benefits'.