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.
The London broil that I purchased was only about 1.5 lbs so it got to a good medium rare (135 degrees F) in just over an hour. I threw it in a hot iron skillet with just a little oil for a minute or two per side to give it a good reverse sear. You could also do this on a hot grill or even under the broiler.repare the London Broil for Smoking. Remove meat from packaging, rinse in cold water and place on a cutting board or in a foil pan to keep the cabinet nice and clean. Pour on a little olive oil. Rub/brush the olive oil all over the top and sides of the meat.