Brain or muscles?
The strong young man at the construction site was bragging that he could outdo anyone in a feat of strength. He made a special case of making fun of one of the older workmen. After several minutes, the older worker had had enough."Why don't you put your money where your mouth is," he said. "I will bet a week's wages that I can haul something in a wheelbarrow over to that outbuilding that you won't be able to wheel back.""You're on, old man," the braggart replied. "Let's see what you got."The old man reached out and grabbed the wheelbarrow by the handles. Then, nodding to the young man, he said, "All right. Get in."

A woman was terribly overweight, so her doctor put her on a diet...
A woman was terribly overweight, so her doctor put her on a diet."I want you to eat regularly for 2 days, then skip a day, and repeat this procedure for 2 weeks. The next time I see you, you'll have lost at least 5 pounds."When the woman returned, she shocked the doctor by losing nearly 20 pounds."Why, that's amazing!" the doctor said, "Did you follow my instructions?" The woman nodded. "I'll tell you though, I thought I was going to drop dead that third day.""From hunger, you mean?""No, from skipping."