Why can one person eat like a growing teenager and not gain a pound, while another person's every indulgence shows up on the scale? Chalk it up to individual differences in metabolism, muscle mass and physical activity. Metabolism is the process by which our bodies convert what we eat into the energy we need to survive and function. It powers everything from breathing to blinking. A fast metabolism is like a hot furnace that burns through fuel (calories) quickly. A slow metabolism needs less fuel to keep the body running.
Claim: Our metabolic rate doesn't change.The truth: While it's true that genetics help determine our metabolic rates, we can boost metabolism by increasing lean muscle mass. Muscle is metabolically active, which means that people with lean, muscular bodies need more energy to function than people with a higher percentage of body fat.
Our muscle mass decreases as we age, and this contributes to a slower metabolic rate. But you can counteract this process with strength training and muscle building activities to help lessen the decline.
Claim: Green tea and chili peppers will boost your metabolism.
The truth: No magic food will speed up metabolism. Some studies have shown that green tea and hot chilies temporarily boost metabolic rates, but the lift isn't significant.
The path to a healthy lifestyle includes a balanced eating pattern filled with nutrient-rich foods.
Claim: Eating late at night slows metabolism.
The truth: There is little evidence to support the claim that eating after 8 p.m. causes weight gain. However, some people may be more likely to snack mindlessly in the evenings, especially while watching television.
Eat regular meals and snacks throughout the day to prevent extreme swings in hunger and fullness. If you're snacking later in the evening, do so mindfully and stop when you're satisfied.
Claim: Very low-calorie diets and skipping meals can jumpstart weight loss.
The truth: Creating a large calorie deficit in attempts to lose weight can backfire. Our bodies are smart and programmed for survival. Severely limiting calories can make your body think it's entering a famine and that it needs to do more with fewer calories.
Resist the urge to crash diet and instead prioritize healthful foods, including whole grains, legumes, vegetables and fruits and fun physical activity. Don't forget about stress management and proper sleep. These healthy lifestyle behaviors contribute to overall well-being.
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