The Full Form of FIT is Frequency, Intensity, Time.

It can be so confusing to filter out the differences between fad diets and legitimate exercise advice. Late-night infomercials count on this confusion to sell all sorts of gadgets and supplements promising a quick fix that doesn’t exist. Unfortunately, there’s no secret to losing weight in a healthy way; it requires eating well and incorporating physical activity into your schedule.

One tried-and-true method to forming a fitness plan that works for you is to apply the FITT Principle. FITT stands for frequency, intensity, time, and type. Let’s break each of these down and look at them one at a time:

• Frequency is how often you exercise. Usually we measure this by number of days each week.
• Intensity is how hard your exercise. We might categorize this as low, moderate, or high intensity.
• Time refers to the time of day you exercise and how long each session lasts.
• Type refers to what kind of exercise you are doing. For example, you might do cardiovascular activity (also known simply as ‘cardio’), strength training, or a combination of the two.