It is even possible to raise your resting metabolism if these activities are performed on a regular basis and at an intensity level that is challenging.
Another advantage of an intense workout is that it can affect hormonal levels by releasing endorphins, which help combat feelings of depression and fatigue. Many people experience what is often referred to as a “runner’s high!”
Speaking of "cardio exercise for weight loss" and "intense workout", have you ever considered training for a triathlon for weight loss motivation? There are many different levels of triathlons, so find one a little above your level of fitness and challenge yourself!
Working out on an empty stomach?
A 2011 report published in Strength and Conditioning Journal reports that the body burns approximately the same amount of fat regardless of whether you eat before or after a workout. The report goes on to state, however, that without proper fuel for the workout, your body may lose muscle, and your calorie-burn will be diminished. This study directly contradicts the myth that exercising on an empty stomach burns more fat.
Additional benefits attributed to cardio workouts:
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An important component of any diet is cardio exercise for weight loss. 
Additional benefits attributed to cardio workouts:
