Although Dai Li's face seemed to be full of confidence, it was all an act. He actually felt very timid. It was his first time using these weight loss exercises. He had no idea if it would work or not.

"System. You said one could see the effects after one day, is that true?" Dai Li asked again and again.

"100%. Just relax. If you don't believe me, you can weigh her after she finishes doing the exercises," the System said.

"So according to what you're saying, it's not after one day, but after one use?" Dai Li continued asking.

"You can say that. But it depends on the person. According to the theory, the fatter one is, the more obvious the result. Pay attention here. I didn't mean weight when I said fat. Whether or not someone is fat is based on height, age, gender, etc.," the System said.

"What does that mean? Please explain it to me," Dai Li didn't want to try and figure it out himself. It was easiest to just ask the System to explain to him.

"Picture this: there are two people of the same height and weight but they are different genders. After they finish the weight loss exercises, the weight loss results will be better for the female than the male. Because men are typically heavier than women, their potential ability to lose weight is lower. Let's use another example. There are two people of the same height, weight, and gender, except one is in their 40s while the other is in their 20s. The one in their 40s will lose less weight than the one in their 20s because the latter is in better physical condition, so the somatic function works better. They share the same mechanism," the System said.

"Okay, I see. I hope this exercise works really well for Feifei Yu!" Dai Li sighed deeply. The weight loss exercise had almost come to an end.

"Okay, we are done!" Dai Li finished the last movement and looked at Feifei Yu. "How do you feel? Are you tired?"

"Good. Not that tired. I just feel so warm," Feifei Yu said.

"Okay, let's go weigh you on the scale to see if you lost any weight," Dai Li said seriously.

"Are you kidding? It only took me 10 minutes to finish your exercises from beginning to end. How could I lose any weight in ten minutes? Your exercise is not a knife that can cut the fat off me," Feifei Yu laughed.

"What if—" Dai Li stopped for a second and continued, "Anyway, your training today has come to an end. Let's check your weight just as a regular activity to track your progress."

"I checked half an hour ago. I cried because I didn't lose any weight," Feifei Yu mumbled in low voice, walking to the electronic scale. Obviously she was expecting results a little sooner too. She stood on the scale and was unable to speak for a while when she saw the number on it.

"Have you lost any weight?" Dai Li's voice trailed off. He felt a lack of confidence because he was afraid the exercise had had no effect.

Feifei Yu turned around suddenly with her face full of joy. She jumped off the scale and shouted, "I'm thinner! I really am! 150 grams lighter! I have finally started to lose weight!"

"150 grams? That's a lot!" Dai Li was surprised too. He didn't expect the effects to be so good after just one exercise.

Losing weight was painful and hard for ordinary people, and especially for athletes. Eating less and working out more were the two key methods for ordinary people. But these same simple methods didn't work for athletes who wanted to lose weight. In fact, it took double or triple the effort for an athlete to both lose or gain weight compared to the average person. Most athletes would keep their weight the same for the duration of their sports careers. In fact, maintaining the same weight was also difficult.

Weight loss of 1.5kg to 2kg after a day's training for athletes was very normal, as the energy consumption and water consumption inside of their bodies put them in a slight dehydrated state after intense training. Their sweat might even be more than 0.5kg or 1 kg. This meant nothing for weight loss, as it would come right back after they drank water.

However, today was different. The exercise had only been 20 minutes. Feifei Yu hadn't even broken a sweat, but her weight had still dropped by 150 grams. It was not intense, either, so it couldn't be the water weight—she was actually thinner.

One practice helps lose 150 grams? This result rocks! It works even better than the sauna. Dai Li acted really calm, as if he was familiar with what had happened, when actually he was incredibly nervous. The exercise had taken less than 20 minutes. Even Dai Li himself hadn't sweat at all, but the results were apparent. It was unbelievable. There was no scientific mechanism that could explain it at all.

Maybe the others would dissect me like I was an alien if they knew what happened, Dai Li thought to himself. But it would be okay if a small group of people knew it. I can say that it was handed down from my ancestors. Anyway, this weight loss exercise is so difficult to use. There are too many restraints. The person has to be an athlete, and I have to lead him or her through the exercise. There is no way that this could be used on a large scale. Dai Li thought about it and calmed himself down.

Feifei trotted over to him and said with a begging face, "Please, please teach me again right now."

"Okay, let's do it again then." Dai Li got ready in the position and counted the rhythms.

"One and two, three and four. Five and six, and seven and eight…"

Feifei Yu ran to the scale after the second round of exercise.

"I dropped more than 100 grams again! I worked out for two months without dropping any weight!" Feifei Yu was very excited and jumped over to Dai Li with her begging face again.

"It's seven o'clock already. Maybe we could stop here today and continue tomorrow? I'm too tired to make another move," Dai Li said, looking at her painfully.

Feifei Yu hadn't had enough. Then she looked at the time and found that it was actually quite late. She also felt starving once Dai Li had reminded her.

"Thank you so much for today. Let me buy you dinner!" Feifei Yu said.

"Dinner? I don't think so. The cafeterias are all closed now," Dai Li said.

"I'm not talking about cafeterias in your place. I'll bring you to the cafeteria that belongs to the provincial sports team. There shouldn't be any traffic right now. Let's take a taxi. It won't be more than 10 minutes," Feifei Yu said.