Pay citizens to live a healthy lifestyle (maintain healthy weight, exercise, don't smoke, and don't drink).

The government can setup centers around the country where citizens can go every 3 months to have their weight and vitals taken, in addition to a website for citizen to record their workouts, what they eat, and share tips. When a person loses weight (if they're overweight) or maintains their weight (if already healthy), reduces their body fat %, remain alcohol-free, smoke-free, and drug-free, shows healthy vitals (i.e blood pressure), and (optionally) records their workouts and diet, the government can send that person a reward check (preferred) or issue a tax credit. This will motivate Americans to live a healthier lifestyle, which will help to ease the strain on the health care system, and hopefully, in the long run, reduce medicare expenses related to preventable diseases.