To lose fat you need both a caloric deficit and hormonal balance. To lose stubborn fat, particularly stubborn belly fat, you need to understand the hormones involved. In women those hormones are: insulin, cortisol, estrogen, progesterone, and testosterone. And of course the major fat burning hormones, the catecholamines.
Grilling the Meat. If you've marinated the meat in the refrigerator, take it out while the grill is heating up. Remove it from the marinade and place the London broil on the hot grill. Cook the meat for approximately 8 to 10 minutes on each side until the internal temperature reaches 130 to 135 F for medium-rare. Although the U.S. Department of Agriculture recommends cooking beef to a minimum of 145 F, cooking London broil to higher temperatures typically yields tougher meat.
Crock Pot London Broil. Preparing a London broil in your slow cooker is a good way to ensure even cooking and tender meat. Combine marinated meat with sliced garlic, bay leaves, water, soy or Worcestershire sauce and sliced onion in your slow cooker. Cover and cook on low overnight, or for 8 to 10 hours.