胃的主要功能是在食物入胃时分泌胃液，主要是胃酸（盐酸HCL 0.7~1.2 PH值）-强酸以灭杀多数的病原微生物。 同时胃的肌肉层，通过不断的蠕动和收缩，将食物与胃液混合在一起，形成半液体的胃糜。形成胃糜过后，胃会逐渐释放排空到十二指肠（小肠的一部分），继续进行后续的消化和吸收过程。
不同的食物在胃中停留和消化的时间各有不同，以下是一些常见食物的大致消化时间范围：
碳水化合物： 碳水化合物（五谷淀粉类、糖类）通常比较容易消化，特别是单糖和双糖。它们可能在胃中停留较短的时间，大约30分钟到2小时不等。
蛋白质： 蛋白质的消化需要一定时间，尤其是较复杂的蛋白质。蛋白质可能在胃中停留约2到4小时。
脂肪： 脂肪消化较为缓慢，特别是在胃中。脂肪可能需要更长时间才能被分解和吸收，通常在胃中停留4到5小时。
纤维： 纤维素是一种不容易被消化的食物成分，它在胃中停留时间较长，可能需要3到4小时。
当胃在工作的时候，我们的气血会汇聚胃部以助消化，这就是为什么气血虚的人在餐后多疲倦犯困。当我们晚上睡觉的时候，气血的循环会慢慢放缓以助入梦乡。
如果我们在胃还没有排空就去睡，气血的循环慢下来，胃的蠕动和收缩也会慢下来甚至停止，食物积存在胃的时间延长，发酵，增加胃的负担；长久以往，胃粘膜和胃功能必受损伤。
另一方面，当有食物在胃的时候，我们的胃就有这个本能的去蠕动和收缩，那睡眠素质如何能好吗？
所以我们就要确保我们的晚餐和睡眠时间的间隔，间隔多长就看你吃的是什么食物了！有胃病需要养胃的人更要注重。（备注: 晚上11点到凌晨3点是肝胆排毒的时间）
Translate using ChatGPT "Stomach Discomfort Affects Rest" and its Relationship with Dinner and Sleep
The stomach's primary function is to secrete gastric juices, mainly hydrochloric acid (HCL) with a pH of 0.7 to 1.2, which is a strong acid that helps kill most pathogenic microorganisms when food enters the stomach. Simultaneously, the muscles of the stomach continuously contract and churn, mixing food with gastric juices to form a semi-liquid mixture known as chyme. After chyme formation, the stomach gradually releases it into the duodenum (a part of the small intestine) for further digestion and absorption processes to occur.
Different types of food stay and digest in the stomach for varying durations. Here are approximate digestion times for some common types of food:
Carbohydrates: Carbohydrates (grains, starches, sugars) are generally easier to digest, especially monosaccharides and disaccharides. They may stay in the stomach for about 30 minutes to 2 hours.
Proteins: Protein digestion takes some time, especially for complex proteins. Proteins may remain in the stomach for approximately 2 to 4 hours.
Fats: Fat digestion is slower, especially in the stomach. Fats may require more time to break down and be absorbed, typically staying in the stomach for 4 to 5 hours.
Fiber: Fiber is a component of food that is not easily digested. It stays in the stomach for a longer time, possibly around 3 to 4 hours.
When the stomach is actively digesting food, our body's energy and blood flow converge in the stomach to aid digestion. This is why people with Qi and blood deficiency often feel tired and drowsy after meals. When we sleep at night, the circulation of Qi and blood gradually slows down to help us enter a state of deep sleep.
If we go to sleep before our stomach has emptied, the circulation of Qi and blood slows down, and the stomach's contractions and churning also slow down or even stop. This prolongs the time food remains in the stomach, leading to fermentation and increasing the burden on the stomach. Over time, this can damage the stomach lining and its function.
On the other hand, when there is food in the stomach, it naturally contracts and churns, affecting the quality of our sleep. Therefore, we must ensure an appropriate interval between dinner and sleep, and the length of this interval depends on what kind of food you have consumed. People with stomach problems should pay even more attention to this. (Note: The period from 11 PM to 3 AM is the time for liver and gallbladder detoxification.)
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