There have been many threads debating it’s compatibility with Catholic faith but in actuality there are better, more descriptive names for for stretches from Kinesiologists, anatomists, physical therapists and sports trainers. Have a look.
Instead of supta virasana or lying down hero pose call it what it is “Extension of the hip while seated on the heals”
Instead of Marichyasana call it “sitting knee up rotation”
Flexibility is one of the most important things we can work on for our bodies. the more flexible we are the less likely we are to be injured and the stretching diminishes tension. It also helps with anxiety and depression.