Stretch marks are a sign of rapid growth or loss, whether muscle or fat. Stretch marks on the shoulders often occur in bodybuilders. Stretch marks are very common. If you have stretch marks on your ...

Stretch marks are a normal part of growing for many men and women. They can occur during puberty, pregnancy, or rapid muscle or weight gain. Stretch marks are not likely to go away on their own.

When our bodies grow, our skin stretches to accommodate the growth. If skin is stretched too much, it can form scars known as stretch marks. Stretch marks usually aren’t painful. They don't usually ...