Why is it recommended to unstring a recurve bow when compound bows stay strung 24/7?

I just returned to archery with a basic recurve, and the instructions state to unstring when not in use. With fiberglass limbs, I cannot understand why this is needed!

Thanks!

With recurve it doesn't make as much of a difference with more modern materials in the limbs. At the shop we have a lot of recurve bows that remain strung and stored that way. These are also shop bows, low poundage and usually used by beginners.

Leaving a bow strung, there is potential for the limbs to take shape under tension and for the bow string to stretch as well. The goal of archery is consistency You want the consistency of draw weight with every single shot, leaving the bow strung for long periods of times can decrease the draw weight of the bow. Not a big factor in our shop bows, but a huge factor to a competition shooter.

As far as compound bows, they're designed to be strung and under tension. Different materials and different designs. Unstringing a recurve bow is simple, a compound not so much.