Kagel exercizes to tighten vaginal grip.

I had a fuck friend that nearly strangled my dick. She said she did kagel exercises daily. Several more after her who did he same were from very pleasing to too tight. Do any of you ladies do these exercises? Most women I've had relations with don't, they rely on the elasticity of their skin and normal muscles which sometimes is a bit weak. Older women really need to, we all sag in the wrong areas. There are smaller dicks but there are also looser vags.