Mary E. Putt

2 months ago | statnews.com | David Ludwig |Mary E. Putt

Imagine a clinical trial with sedentary, overweight adults. One group is assigned to remain sedentary, the other to undergo intensive physical training with daily runs, calisthenics, and sports. After a week or two, the training group would probably feel sore and tired, and their endurance might be reduced. But we wouldn’t conclude that physical activity is bad for health. Clearly, we’d need a better, longer study to see the benefits.