Why are complex carbohydrates such as starches considered long-term energy sources?

Complex carbohydrates, like starches, are composed of long chains of glucose molecules, which take longer to break down compared to simple carbohydrates. This slow digestion process provides a steady release of glucose into the bloodstream, supplying sustained energy over an extended period. Additionally, the fiber content in many complex carbohydrates aids in digestion and helps maintain stable blood sugar levels, further contributing to their role as long-term energy sources.