Liquids with hydrogen bonds tend to have higher viscosities. This is because hydrogen bonds create strong intermolecular forces between the molecules, making them more difficult to flow past each other. The strength of the hydrogen bonds also affects the viscosity, with stronger hydrogen bonds leading to higher viscosities. Additionally, the size and shape of the molecules can also affect the viscosity, with larger and more complex molecules tending to have higher viscosities. Hydrogen bonding can also lead to the formation of networks or clusters of molecules, which further increases the viscosity.