Whenever you reach the age of 40, weight loss changes a lot because your metabolism drops.  To burn fat and become more toned you will need proper nutrition coupled with a healthy workout.  This is where cardio workouts (running, walking, hiking and swimming) are beneficial as they can help give your metabolism a boost.  Yoga can also be very beneficial if you need to loose weight because not only will these postures help to relieve your stress but they will also help with weight loss.  Many nutritionists also tout the benefits of the acai berry diet and colon cleansing.  The reason why they like the acai berry diet is that it will increase your metabolism so that you can lose weight and burn fat as your hunger is suppressed.  As for colon cleansing, this is the best way in which to eliminate harmful toxins from your body and thus clean up your colon so that you can be healthy.