You cannot lose weight without dieting or exercising.  1. Why? Because we are ugly bags of mostly water and store excess calories that we eat as fat.\ 2. Why? Because our bodies resting metabolic rate is finite and our capacity to eat high caloric food is less so. 3. Why? Because regulation in the hypothalamus and internal organs of the human body maintains an internal temperature of roughly 37 degrees Celsius or 98.6 degrees Fahrenheit in order to sustain optimal performance and protect us from death. 4. Why? Because if our body temperature exceeds 107.6 degrees Fahrenheit for an extended period of time, our brain, heart, kidneys, liver, and intestines will become damaged.  So, you cannot lose weight without dieting or exercising.  5. Why? Because SCIENCE