To stay healthy or to improve health, adults need to do two types of physical activity each week: aerobic and muscle-strengthening activity. How much physical activity you need to do each week depends on your age.
For adults aged between 19 and 64 it is recommended that you should try to be active daily and should do at least 2.5 hours of moderate-intensity aerobic activity such as cycling or fast walking every week and muscle strengthening activities on 2 or more days a week that will work all major muscle groups.
Alternatively, 75 minutes of vigorous-intensity aerobic activity and muscle-strengthening activitiues on 2 or more days a week that work all major muscle groups or, alternatively an equivalent mix of moderate and vigorous aerobic activity every week plus the muscle-strengthening activities on 2 or more days a week.
Many people start off the New Year with good intentions by joining a gym, but statistics show that visiting the gym and membership drops off quite quickly. There are other alternatives to visiting the gym, some of which are included above.
Try and make 2012 a year when you get your body back both fit and in shape.