Teachers should not stop the barre to talk, or explain or muscles will cool off. Many adult ballet dancers have grown up in dance studios. It has become a way of life. Marriage, children, work, home, reduce time for dancing, but to eliminate dance class all together is a mistake. There is energy and vitality waiting in the dance class, waiting to be unlocked.
Many adults give up dancing as adult responsibilities mount.
Many find it is a big mistake and return to class after being out for years. Adult bodies get out of shape quickly but brain does not realize this. It is not age that it getting in the way, it is being out of shape. The return should be taken gently. Gradual and persistent effort over time pays off.