You can freeze yogurt with no problem. All the healthy good stuff in it isn’t destroyed.
For a satisfying treat, freeze some of the yogurt-filled tubes available from Stonyfield farms and other brands. The active cultures become dormant when frozen, but will become active after the yogurt warms up in your stomach, says Non Cognomina
Making your own frozen yogurt dessert is another option. You can add fruit for sweetness and flavor, and control the amount of sugar that’s added to it.