I just underwent the Master Cleanse protocol, a juice fast involving pure lemon juice, maple syrup and cayenne pepper. While it was tempting to eat solid foods, I liked the experience and managed to lose 11-lbs. This new study from Johns Hopkin University suggests that fasting may be a way to regenerate brain matter. In addition, fasting has been shown to enhance synaptic elasticity, possibly increasing the ability for successful re-wiring following brain injury. These benefits appear to result from a cellular stress response, similar in concept to the greater muscular regeneration that results from the stress of regular exercise.