Maintain a calorie deficit
Eat more protein
Reduce sugary and ultra-processed foods
Drink enough water
Limit alcohol
Do regular cardio
Add strength training
Improve overall body fat percentage
Practice good posture
Keep your tongue on the roof of your mouth and chin slightly tucked
Sleep enough each night
Manage stress
Chew sugar-free gum occasionally
Avoid salty foods that cause bloating
Consider facial exercises
Consult a doctor if the change is sudden or unusual
Consider professional treatments if needed