People with lower levels of subcutaneous body fat may also notice more prominent veins because there is less tissue covering the blood vessels. In many cases, this is simply a normal characteristic of an individual’s anatomy.
Exercise and temperature
During exercise, blood flow to working muscles increases and blood vessels can dilate. This can temporarily make veins more prominent, particularly in the hands and arms.
Warm temperatures can have a similar effect. Heat causes superficial blood vessels to dilate as the body attempts to release heat through the skin. Consequently,
