Yogurt has made a stamp in most peoples minds to be a "healthy" food, but I want to warn you that it's not always the case. So before diving into your big bowl of yogurt check the nutrition facts table. You may be surprised to find that many delicious flavoured yogurts contain as much sugar as a serving of ice cream (about 20 grams or more).
You might as well indulge and treat yourself to a cold treat rather than perceive you ate a healthy snack and continue to crave a sweet treat.
My advice is opt for plain yogurt and flavour it yourself. You can add cinnamon, fresh fruit, vanilla extract, honey, nut butter, nuts, seeds etc. This way you can get the probiotic benefits, proteins and fat from the yogurt while getting added nutritional value from the ingredients you add without the hidden sugars.
Also watch for artificial sweeteners in flavoured yogurts with a low sugar content they are typical sweetened with an artificial sweetener.