Biomolecular simulations are computer-based methods used to study the behavior and interactions of biological molecules, such as proteins, nucleic acids, and lipids. These simulations help researchers understand complex biological processes at the molecular level by modeling how these molecules move and interact over time. By using principles from physics and chemistry, scientists can predict the structure and dynamics of biomolecules in various environments. This approach is valuable in fields like drug discovery, where simulations can identify potential drug candidates by observing how they bind to target proteins, ultimately aiding in the development of new therapies.