Drinking a glass of milk before going to bed at night is actually very helpful to the body, and generally it will not cause obesity. Because science has confirmed that sleep time is the most vigorous time for calcium absorption, drinking milk at night has many benefits to the body.

Milk can't be drunk with juice. 80% protein in milk is casein. When the pH value of milk is lower than 4.6, casein will agglutinate and precipitate, making it difficult to digest and absorb. You can't take medicine after drinking milk, which will affect the efficacy. Milk can't be eaten with chocolate. Chocolate contains oxalic acid and milk contains calcium. The combination of the two will produce insoluble calcium oxalate, which is harmful to human body.