I'm Jackie Arnett, Registered Dietitian, and this is what percentage of a person's metabolism is going to drop in the course of a decade. Whether it's a lack of attention to nutrition, you know the lean proteins, fruits and vegetables, and nuts we know we should be eating, physical activity or a drop in metabolism with each passing year most people gain weight and just because you're getting older or with age it doesn't mean the metabolism necessarily has to drop but according to US studies in the course of a decade a person's metabolism drops by 3 to 5 percent and it doesn't need to be that way. Metabolism can be maintained through 3 simple ways. By increasing muscle mass. The more muscle mass you have the better your metabolism is. You could do basic strength straining. A little bit goes a long way as far as maintaining your muscle mass. Another way is making sure that you don't increase your fat mass. You can make sure your fat mass and it's percentage by doing a body fat check. You could do this at a local gym or even at the doctor's office. If you have 30 percent or more body fat you should make sure that you're making your metabolism work for you and incorporating better nutrition and physical activity. The last thing you want to do is make sure your basil metabolic rate doesn't decrease. Your basil metabolic rate is minimum calories you need to do your everyday functions. By making sure it doesn't decrease you can make sure your metabolism stays better. Those are 3 ways to make sure your metabolism doesn't get worse over the course of a decade so you can stay healthy.