Hello, I'm an expert in the field of fitness and nutrition. Let's dive into the concept of the fat burning zone. The fat burning zone is a term often used in the context of cardiovascular exercise to describe a range of moderate-intensity exercise where the body is said to burn a higher proportion of fat for fuel. This zone is typically considered to be around 60-70% of an individual's maximum heart rate (MHR). The idea is that at lower intensities of exercise, the body primarily relies on fat metabolism for energy, rather than carbohydrates. However, it's important to note that the concept of the fat burning zone has been a subject of debate among fitness professionals and scientists. Some argue that while you might burn a higher percentage of fat at lower intensities, the total amount of fat burned may be less than what you would burn during higher intensity workouts. High-intensity interval training (HIIT), for example, is known to burn more calories in a shorter amount of time and can also boost metabolism post-exercise, leading to increased calorie burn even after the workout is over. Moreover, engaging in high-intensity exercise can also contribute to increasing muscle mass, which in turn can increase your resting metabolic rate, allowing you to burn more calories at rest. In summary, while the fat burning zone can be a useful concept for some individuals, particularly those who are new to exercise or have health concerns that limit their ability to engage in high-intensity workouts, it's not the only or necessarily the most effective way to burn fat. A balanced approach that includes a mix of moderate and high-intensity exercises, along with a healthy diet, is typically recommended for optimal fat loss and overall health. read more >>

Fat burn zone, which means your heart rate is 50 to 69% of maximum, is the low-to-medium intensity exercise zone and may be a good place to start for those new to exercise. It's called the fat burn zone because a higher percentage of calories are burned from fat, but the total calorie burn rate is lower. (from webmd)4.read more >>