Forget the government's recommendations about exercising for a mere half hour on most days. If you want to lose weight and keep it off, a new study suggests you need to work out for at least an hour five days a week. These successful dieters burned an average 2,800 calories a week - the equivalent of running 28 miles. In a smaller study of 140 people, the researchers found that those who maintained their weight loss averaged 280 minutes of exercise a week. Most combined various aerobic activities such as walking and cycling with strength training.
Researchers suspect protein helps by boosting insulin levels.
While the cyclists who took arginine did recover faster, the effect wasn't strong enough to rule out it happening by chance. And the arginine had no effect on insulin response. So if you want to give this highly marketed supplement a try, be wary. It may boost your recovery - but at a cost. So many companies are making sports drinks these days that we can't possibly keep track of them all.