1. Regulate digestion: Hawthorn can help promote the digestive function of gastrointestinal tract, and also relieve abdominal discomfort. Therefore, drinking dried hawthorn soaked in water for a long time can help regulate the digestive system.

2. Lowering blood pressure: Hawthorn contains many nutrients, such as sugar, vitamin C and carotene, which can help lower blood pressure and prevent cardiovascular diseases.

3. Supplement nutrition: Hawthorn contains many vitamins and minerals, such as vitamin C, vitamin E, potassium, magnesium, etc. These substances can help supplement the nutrients needed by the human body and enhance the body's immunity.

4. Lowering cholesterol: Hawthorn contains many active substances, such as maslinic acid, rutin and flavonoids, which can help lower cholesterol and prevent cardiovascular diseases.

5. Eliminate fatigue: Hawthorn contains a variety of vitamins and minerals, which can help eliminate fatigue and improve the vitality and immunity of the body.

Generally speaking, soaking dried hawthorn in water has the effects of regulating digestion, lowering blood pressure, supplementing nutrition, lowering cholesterol and eliminating fatigue. However, it should be noted that the principle of proper amount should be followed when using hawthorn to avoid causing adverse reactions.