That’s peeing on other people’s stuff. This is mine! That’s mine! I don’t know what this is but it’s mine! I don’t want that but all the stuff over here is mine!
I just did this a few weeks ago on a brand new suit in the areas that were tight. Rubbed some Lexol leather conditioner in the same areas, blew up the ball so it was really stressing the seems and let it sit over night……Night and day difference…..couldn’t believe the difference it made. I was skeptical that it would stay and not shrink back but it stayed stretched.
Don't use water, use rubbing alcohol in the areas you want to stretch. Soak those areas completely! wear it until it dries completely! Alcohol will let it stretch and then dry much faster than water with little damage. Same thing works for shoes. Pour a bottle of alcohol in the shoe/boot ... works great. That is how we broke in work shoes...Trust me.
My gym is in the house , so I just work out in the suit for how ever many times I can fit in before its time to go to the track . I also use the wifes high dollar skin lotion on the bendy parts intermittent , I dont tell her .