German researchers have shown that drinking about two cups of cold water can temporarily boost metabolic rate by roughly 30 percent. The effect appears to be mainly due to an increase in norepinephrine.
Certain energy drinks have been shown to boost fat loss. University of Oklahoma (Norman) researchers reported in a 2008 study that when 60 male and female subjects consumed a diet energy drink containing 200 mg of caffeine and 250 mg of EGCG from green tea extract for 28 days, they lost more than one pound of body fat without changing their diets or exercise habits.
Drinking whey protein as a between-meals snack is a smart way to enhance not only muscle growth but also fat loss. UK researchers found that when subjects consumed a whey protein shake 90 minutes before eating a buffet-style meal, they ate significantly less food than when they consumed a casein shake beforehand. The scientists reported that this was due to whey’s ability to boost levels of the hunger-blunting hormones cholecystokinin and glucagon-like peptide-1.
Even though artificially sweetened drinks are calorie-free, drinking too many can actually hinder your fat-loss progress. It seems that beverages like diet soda mess with your brain’s ability to regulate calorie intake, causing you to feel hungrier than normal so you eat more total calories. Other research suggests that the sweet taste of these drinks can increase the release of insulin, which can blunt fat-burning and enhance fat storage.
Soy protein is a proven fat-burner. In fact, in a 2008 review paper University of Alabama at Birmingham researchers concluded that soy protein can aid fat loss, possibly by decreasing appetite and calorie intake. The scientists also found that subjects drinking 20 grams of soy daily for three months lost a significant amount of abdominal fat.
When you whip up a protein shake, consider making it thicker by using less water. It could help you feel less hungry while dieting. In a study from Purdue University (West Lafayette, Indiana), subjects drank two shakes that were identical in nutritional content, and reported significantly greater and more prolonged reductions in hunger after drinking the thicker shake.
As mentioned in tip No. 3, the essential omega-3 fats in fish oil promote fat loss, which is enhanced with exercise. This is also true for fish-oil supplements containing omega-3 fats. Take one to two grams of fish oil at breakfast, lunch and dinner.
The majority of studies showing the effectiveness of green tea for fat loss have used green tea extract. One study confirmed that the EGCG from the extract was absorbed significantly better than the EGCG from the tea. Take about 500 mg of green tea extract in the morning and afternoon before meals.
You’ll also want to add the healthy fat CLA to your supplement regimen. CLA can significantly aid fat loss while simultaneously enhancing hypertrophy and strength gains. Research shows it can even help specifically target ab fat.