You will lose a pound if you burn 3500 more calories than you take in. This is one of the bottom lines in weight loss but whether or not you are actually burning 3500 calories varies from person to person with the same activity.
A dog can survive without eating for 14 days, procided day wouldn't be in good shape and health.
Quick Answer. An elderly person can live approximately three weeks without food, according to Dina Spector for Business Insider. However, there are additional factors to consider when determining how long a person can survive without food. These factors include age, weight and hydration levels. Continue Reading