A fast way to lose weight

Not all fasting is the same: the amount and type of energy consumed, frequency of eating occasions in a day or number of fasting days per week may vary. 

The three types of fasts below have been researched since the 1960s.1


During the month-long, religious obligation during the Islamic calendar, Muslims adhere to strict fasting (no food or fluids) from dawn to sunset, some 13—18 hours.

All adult Muslims fast, except those who