As Oprah says "Success is the way opportunity meets preparation". Challenge Run excellent when you have had a super stressful day and have lots of one's energy (channel that energy to your run) and increase your entire pace by .5min / mile. Mediocre people allow their luck to did not get them. http://[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@[email protected]@s.jd.u.eh.yds.g.524.87.5