First, eat less and wear less clothes to save costs. Especially in the current financial crisis, I may lose my job that day. Save money to tide over the difficulties.

Second, there are no wealth diseases caused by obesity such as hypertension and hyperlipidemia. Good health is more important than anything else.

Third, walk fast and have strong endurance. Especially when climbing mountains, you won't easily gasp.

Fourth, thin people sleep in small beds and don't have to adjust the air conditioning temperature too low in summer. Can save social raw materials and energy, and is beneficial to environmental protection.

Fifth, it is convenient to move, especially the crowded buses and trains in Spring Festival travel rush have obvious advantages, and they get in through the cracks.