The truth is it doesn't take long for the body to start losing strength, endurance and aerobic power and anaerobic capacity. In just days or weeks some of these qualities can start to decline. The adage "use it or lose it" has more scientific relevance than you may think. You work out hard and the body adapts by getting fitter, you stop and that hard work starts to deteriorate.
6.2 miles is not so far that it intimidates new runners, but it's far enough to qualify as a worthy goal -- whether you're a newbie or seasoned pro. If you relate more with the former, fear not. With the right training plan and mindset, you'll arrive at the starting line prepped, ready, and injury-free.