How about trying some healthy options that they would like? Maybe smoothies or mixed fruits. The kids should feel like they are part of the planning process for this lifestyle change instead of feeling forced, that way they won’t be so inclined to rebel against it. Try coming up with weekly meals together as a family and incorporate their choices as long as they are healthier options. For example, if they want chips- get them the baked ones for now. Trust me, it will take time to reach them, but they will understand the change if they feel more included. Cook meals together, have them help make a dish here and there and the more they get involved the likely they are to change their eating habits all together. Plus, once they start to see the changes in their body they won’t want to go back to eating unhealthy. Lastly, if you have Netflix, try watching “WHAT THE HEALTH” together. It will definitely wake them up.