Shaun Karp is a certified personal trainer catering to all ages and fitness levels. His clientele ranges from novices to professional athletes. Visit his website at www.karpfitness.com.
If you're getting bored with your morning jog and want to try something new with your exercise routine, interval training is a great way to implement an effective car-diovascular and strengthening workout. In 30 minutes you'll not only get your heart rate up, you'll see far more benefits than if you spent a half hour on a brisk walk through your neighbourhood.