Water has a specific heat capacity of about 4.2 Kilojoules per kilogram per degree Kelvin, so it would take about 6 Kilowatt Hours of electricity to heat 100 Litres of water from 15 degrees centigrade to 65 degrees centigrade. As a standard immersion heater is 3KW, so it would take 2 hours to heat 100 Litres of water.
Drinking a large amount of carbonated drinks at bedtime can also cause hiccups, as the air in these drinks can distend the stomach. Consuming a large amount of alcohol before going to bed is another possible cause of hiccups during sleep. The excessive amount of alcohol can cause the stomach to distend.
1 Common causes of hiccups include: 2  eating too quickly, eating or drinking too much, 3  diseases that irritate the nerves that control the diaphragm, 4  abdominal surgery, 5  strokes or. 6  brain tumors, 7  noxious fumes, and.  certain medications.