Carlos did 14 days of water fasting followed by 5 days of keto and 16:8 intermittent fasting. During his 8 hour feeding window he would consume 1500 calories. He repeated this cycle until he had shed 104 lbs.
He also enjoyed staying active by playing raquetball and as he got more fit he was able to run and play basketball as well.
During his water fast he consumed pink salt, lyteshow to replenish his electrolytes. He noticed that when he broke his extended fasts with keto, it was much easier to get back into another fast. When he consumed carbohydrates during his 16:8 feeding window, then he found it much more difficult to do an extended fast.
You can watch his tell his story on Youtube:
