If you run for too long, your muscles will be lost. If you run more than 10 km, your thighs and calves will become thinner day by day. At the same time, your muscles are also losing. According to your personal situation, you can strengthen equipment exercise, abdominal muscles and sit-ups in various postures.
In addition, control diet, eat more vegetables and drink more boiled water, and alcohol and all sugary drinks are strictly prohibited.
You can eat L-carnitine before exercise, preferably imported, which is a good thing to lose weight, strengthen perspiration and burn fat. If you use protein powder instead of staple food, you will lose weight faster, but you may rebound after stopping exercise.
Personal experience, under the guidance of a fitness instructor, I lost weight in 10 days 10 kg.