My folks stay in the bay area. If you live in an area where security is an issue, train indoors by going up and down the steps, doing sit-ups, strolling or working in place, or jumping rope. Whenever you decide to eat, the food will likely be broken down rather more slowly than it normally is, and it will even be stored as vitality or fat, which will not be burned throughout the exercise. Strolling 30 minutes a day is a superb way to train. The most obvious method