It takes a multipronged approach to see results in 30 days. Jim advises doing cardio for 30 to 60 minutes, three to five days a week. The goal is to burn 500 calories a day; this can be achieved through cardio, eating in a calorie deficit, and getting in more steps. He also advises strength training two to four days a week. Not only does strength training also burn calories, but it helps build lean muscle, too, which burns more calories at rest.
This could be because the body increases insulin secretion in anticipation that sugar will appear in the blood. When this doesn’t happen, blood sugar drops and hunger increases. Whether this chain of events regularly takes place is somewhat unclear. Something odd happened when I tested Pepsi Max though, and there are well-designed studies showing increased insulin when using artificial sweeteners.
Some of us no longer have the strong joints we had as teenagers. Jogging is out of the question and walking doesn’t cut it. The good news is elliptical trainers provide an intense, low impact cardio workout. In fact, a 145-lb. person can burn about 300 calories in 30 minutes on an elliptical trainer. That’s about as many calories as running burns, but without the joint wear-and-tear.