Apart from 16 hour fasting, you can also do a

1) Weekly fast - For any one day of the week you can fast on only fresh vegetable juices and coconut water.

2) 3 day juice cleanse - This can be done once in 3 months where you drink only fresh vegetable juices and coconut water for 3 days in a row.

 

A 3 day juice cleanse should be practiced in the correct way with proper knowledge and hand holding.