Anal or vaginal stretching?

When stretching the anus or the vagina has anyone stretched to the max and left it stretched for some time until the subs muscles relaxed and found that then they could stretch it just a bit more, without injury?

Mine has been stretched and then relaxed many times.

Yes, keeping at max stretch for some time can yield a bit more of girth conquered. Emphasis on "can". Another trick is to squeeze and hold the butt as tight at possible while being stretched. Repeat until muscles get really tired. I find this really stimulating and can sometimes open me a bit more.

I insert my water bottle suppository nice and deep then leave it there for 10-15 minutes push it out and repeat

Do this about 3-4 times love the feeling and get me open and relaxed deep