Not at all, shrinkage is a normal part of fatigue. The best way to combat this is to
strap on your [words=https://shop.mattersofsize.com/products/sizegenetics-penis-extender]SizeGenetics[/words] at a medium tension to hold you in an extended position after training length, you can also use the [words=http://www.mattersofsize.com/forum/showthread.php?44-Ace-Strapped-Jims-Joint]
Uncle Jim[/words] Wrap. With girth, a simple, cheap
cock ring will prevent the shrinkage of girth. In both cases length and girth, healing in an elongated or expanded position will greatly increase your permanent gains.