Over the duration of the series, the Housemates were given a series of tasks by Big Brother which tested them in many ways. They were also put to the test by their own ideals, prejudices and opinions against other people from different walks of life; something that has survived from the original "social experiment" of "Big Brother 1". They lived in the communal House and shared cooking and cleaning chores amongst themselves. Housemates were forbidden to sleep during daylight hours (unless unwell) - Big Brother plays the wake-up call persistently in the morning if Housemates do not wake up and will play an alarm clock noise into the house if a Housemate falls asleep during the day. Housemates must also live by the fundamental rules of Big Brother; if the rules are broken it can result in formal warnings, various punishments or even a Housemate's removal from the game. They must wash their own clothes by hand, and they have to make their own bread from scratch. Each week Big Brother sets the Housemates a task in order to determine the shopping budget for the following week. They must work together to win the tasks in order to win a luxury shopping budget which changed based on the number of people remaining in the house. If all food runs out in the House, Big Brother provides emergency rations of chickpeas and rice. Housemates were responsible for their own shopping and decide which items the budget will allow them to have. Only a small percentage of the overall budget can be spent on alcohol.