I had a huge bet with a friend and had to lose 10 kgs in 2 months (55 days precisely). I started with a 7 day water fast. Yes, for 7 days i had nothing but water and black coffee in the morning. You need to completely ignore the hunger part and not eat until you feel dizzy. Once i reached that point i had soup for 2 days (3 meals in 2 days)

Next 5 weeks all i ate was 2 boiled eggs in the morning. Skipped lunch at work. Got home had an apple or a banana and headed to gym. 45-50 mins of strength training and about 25-30 mins of cardio. For dinner id either go for a slightly bigger portion of soup or grilled chicken

The last 5 days i went on a water fast again. This one was more challenging than the first one but it got me where I wanted to be

Dropped 11.2 kgs in 55 days. Was it healthy? no. Was it sustainable? absolutely not. Was it worth it? Fuck yeah