attrition

From the mailbag: I ran 50+ in College and I just turned 40.  I have not let myself go like most 40 year olds, and I’ve stayed fit from a variety of sports throughout the last 2 decades.  What can I expect to run at M40 and M45? This article will discuss the attrition rate of 400 … [Read more...] about The Attrition Rate of a 400 meter Sprinter