I used to never stretch, and had no issues.

Then a couple years back I started to get intense cramps after 2+ hours. My legs would simply lock up like a broom stick.

I tried salt, more liquid, bananas, electrolyte capsules, trace minerals, all the typical suggestions for cramping.

Still had the same cramping issues.

After I started to stretch, and doing yoga regularly, I don't experience intense cramps.

I think stretching to keep the muscle supple really help to prevent cramps. The muscles seem to be more relaxed and won't tense up under effort with regular stretching.

As far as performance is concerned, I don't think stretching helps.

Best regards,

Michel
http://www.freetrainingplan.com