You can have yogurt as long as it is not light. Many of the Gatorade products as well as protein shakes has artificial sweetener in them. You can have both as long as they are sweetened with sugar and not artificial sweetener.
I’;m writing and singing songs. I have one that I’;ve done a lot of work on (writing, recording) and I still need to perfect it and add music. As an aspiring artist, should I also focus on working on other songs in this album or should I put most of my energy into perfecting this one son before going on to the next one?