First let's learn about the basic food groups, because we need to eat some portion or serving from each basic group to maintain our health and energy. After knowing these basic things we should make a graph of our age plus weight because these statistics will help you decide the serving size according to your body requirements.
Understanding the Food Groups
Recommended Daily Servings for Each of the Food Groups:
The food pyramid commonly referred to by people to determine how much of each food group
they need to consume is not actually accurate for everyone. The suggested servings per day are for a typically normal person. But for those of us who are more active, we need more sustinanance. If you frequently (meaning 2 or more times a week) exercise or lift weights, you are not getting enough calories to live on. By eating a well-balanced diet, you will feel more energy and see faster results whether you are trying to lose or gain weight.
You should be aiming for 55-60 percent of carbohydrates, 25-30 percent of protein and 15-20 percent of fat at each meal.
Eat every couple of hours throughout the day to prevent hunger.

Make sure you eat from every food group at most sittings.
SERVING SIZE FOOD
FOOD GROUP SUGGESTED SERVING
Source: 'Essortment'
'Nal.USDA.gov' suggests: The Pyramid calls for eating a variety of foods to get the nutrients you need and at the same time the right amount of calories to maintain healthy weight.
Use the Pyramid to help you eat better every day...the Dietary Guidelines way. Start with plenty of breads, cereals, rice, pasta, vegetables, and fruits. Add 2-3 servings from the milk group and 2-3 servings from the meat group. Remember to go easy on fats, oils, and sweets, the foods in the small tip of the Pyramid.
What Counts as One Serving?The amount of food that counts as one serving is listed below. If you eat a larger portion, count it as more than 1 serving. For example, a dinner portion of spaghetti would count as 2 or 3 servings of pasta.
Be sure to eat at least the lowest number of servings from the five major food groups listed below. You need them for the vitamins, minerals, carbohydrates, and protein they provide. Just try to pick the lowest fat choices from the food groups. No specific serving size is given for the fats, oils, and sweets group because the message is USE SPARINGLY.
Useful links:
* A Canadian health site: 'Healthy You'
* 'Recommended Daily Servings for Each of the Food Groups' from 'Live Strong' site.
Read more: http://www.livestrong.com/article/83899-recommended-daily-servings-groups/#ixzz0xtZMPqdO
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