The Department of Health and Human Services recommends that healthy adults get 2.5 hours a week of moderate activity or 1.25 hours a week of vigorous activity to maintain optimal health. Rollerblading can be a fun and convenient way to burn calories and get some physical activity into your schedule.

When you are ready to lose weight, you want to see results immediately. Nothing can be more detrimental to your program or self-esteem than hitting a plateau. Treadmills provide opportunities to create programs that can be updated to fit your fitness goals.

You don't need a gym to get a quality workout -- just head out the front door for a brisk walk. It's the most popular way to stay fit, according to the Centers for Disease Control and Prevention in 2012. Walking as an exercise can even help you lose weight, if combined with a low-calorie diet.

There are two basic types of female body shapes; the apple and the pear. If you gain weight in your chest and belly you have an apple shape. Women who gain weight in their hips and thighs have a pear shape.

Some people love to exercise; for others, it is the bane of their existence. If you fall into the latter category, you probably have a reason or two for not exercising and guilt because you know you should. The fact is, everyone needs at least 150 minutes of physical activity each week for optimum health.

Throwing up is a complex bodily reaction that forces the contents of your stomach to leave the body. You might vomit because your digestive system detects something bad in your food.

There is a big difference between losing weight and losing fat. Your goal should never be to lose weight, but instead should always be to lose fat. When you lose weight, you lose a little bit of everything--fat, muscle, fluids, organ size. You want the majority of your weight loss to come from fat, not the other stuff.

When you are severely overweight, usually by at least 100 pounds, you are considered to be morbidly obese. If you are morbidly obese, you are at a higher risk for heart problems, high blood pressure, diabetes and cancer. You may also have a more difficult time being active.

When it comes to weight loss, an often-overlooked factor is long-term success. The National Weight Control Registry maintains data on Americans who have lost more than 30 lb. and have maintained their weight loss for more than a year. Of these Americans, 90 percent exercise an average of one hour a day.

Greer Childers is notoriously famous for creating the BodyFlex weight-loss program. For over 20 years, she has been sharing her secret for weight-loss success.

Knowing the number of calories you burn during various activities and during sleep is important if you are trying to lose or maintain weight. Keeping track of calories will enable you to understand why your previous efforts may not have resulted in success.

If you go a bit overboard on your daily calories, you could gain weight. But you can burn off those extra calories through exercise; choose the activity you enjoy most that will give you the right calorie burn in the amount of time you have available.