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.
A large number of medications may cause hiccups. Medications taken only at bedtime, such as sleep medicine, cause hiccups primarily during sleep. Other medications cause hiccups at other times of the day as well. These are examples of medications that may produce hiccups: Sleep medications: eszopiclone (Lunesta)
Many conditions can cause this irritation and result in hiccups, including eating too fast and swallowing air, chewing gum, smoking, eating or drinking too much, strokes, brain tumors, damage to the vagus or phrenic nerve, some medications, noxious fumes, anxiety and stress, and in babies, hiccups may be associated with crying, coughing, or gastroesophageal reflux .