Medium and high intensity physical activity

Aim for a total of 150 or more minutes a week of medium-intensity aerobic physical activity. Or try for 75 minutes or more of high-intensity aerobic activity a week. Or do an equal mix of both.

• Medium-intensity activity.This means your heart is beating faster. And you can talk while you exercise. Examples are dancing, gardening, and brisk walking.

• High-intensity activity.This means your heart is beating faster. And it's hard to talk in full sentences while you exercise. Examples may include running, swimming laps, and hiking uphill.

Try to spread out your activity during the week. And do muscle strengthening activities 2 days a week. Do these at a medium or harder intensity.

Some benefits from fitness

People who are fit:

• Are more alert and productive.

• Have more energy, both physically and mentally.

• Handle stress better.

• Sleep better.

• Have better overall health.

• Are less likely to get injured.

Check your health first

It's a good idea to talk with your doctor before you start a new exercise program. This is especially important if you answer yes to any of the questions below:

• Do you have a chronic health problem? Examples are heart disease, diabetes, and osteoarthritis.

• Do you ever have chest pains?

• Do you ever feel faint or have dizzy spells?

• Has a doctor ever said your blood pressure is too high?

• Do you have any joint pain?

• Do you take any prescription medicines?

Will you lose weight?

Many of us would like to lose or keep off a few pounds. Being more active each day and building muscle can help. Here’s how:

• Being active burns calories. You burn nearly twice as many calories just walking slowly as you do by sitting.

• Muscle burns more calories than fat. The more muscle you build up, the more calories you burn.

• If you add more muscle, you’ll use more calories even when you’re not being active.

• Being active helps you keep more muscle as you age. More muscle means it will be easier to control your weight.