To refrain from too much sleep.
To go without entertainment, dancing, singing, music, games and other distracting activities; and to refrain from wearing unsuitable clothing, jewellery,...
To refrain from eating after midday. (summer time 13:00h)
To refrain from alcohol, drugs and all other substances which change consciousness.
Not to lie, and to refrain from coarse, malicious and gossipy speech.
To renounce any sexual activity.
Not to take what hasn't been given.
Not to intentionally kill or harm any living creature.