This popular method alternates between eating and fasting periods. Common approaches include:

• 16/8 Method: Fast for 16 hours and eat during an 8-hour window.

• 18/6 Method: Fast for 18 hours and eat within a 6-hour window.

• 20/4 Method: Fast for 20 hours and eat during a 4-hour window.

• 5:2 Diet: Eat normally for five days and restrict calories (500-600) on two non-consecutive days. 

• Eat-Stop-Eat: Fast for 24 hours once or twice a week. 

This method involves fasting every other day, where you can consume very few calories (about 30% of your daily intake) on fasting days. 

This approach restricts eating to one nutrient-dense meal per day, with a fasting period of 23 hours. 

Circadian Rhythm Fasting aligns eating patterns with the body's natural circadian rhythms, promoting eating during daylight hours and fasting overnight. 

Similar to intermittent fasting, this method limits eating to a specific time frame each day, such as an 8-hour window. 

Only water is consumed during this fast, typically lasting from 24 hours to several days. 

Participants consume only fruit or vegetable juices for a set period, often for detoxification purposes. 

Certain foods or drinks, such as processed foods or animal products, are eliminated for a specific duration. 

This involves reducing calorie intake for a few days each week without complete fasting. 

Involves fasting for more than 24 hours, sometimes up to several days. This requires careful monitoring and is often done under medical supervision.