Recently, various new monomers have been designed that exhibit multiple acceptor/donor sites per molecule thus, multiplying the amount of hydrogen bonds throughout the network. Liu and co-workers introduced N-acryloyl glycinamide (NAGA) and also N-acryloylsemicarbazide (NASC), which can engage in 3-4 hydrogen bonds at the same time. Remarkably, when just NASC is homopolymerized in different concentrations, an increase of monomer concentration from 15 to 30 v/v% leads to a doubling in both stiffness (E = 48.4-100.3 MPa) and fracture energy (Γ = 5.65-11.4 kJ/m 2 ), while the water content is reduced from 61% to 46%. The same monomer (NASC) was later copolymerized in various ratios with AAc to yield the highest fracture energy within the category of electrostatic interactions. In the mentioned work by Wu et al, a fracture toughness of Γ = 144 kJ/m 2 was reported, markedly coming at the expense of both stiffness (E = 0.2 MPa) and water content of the hydrogel (36%). The fact that both preceding examples are single networks further emphasizes the capacity of hydrogen bonding as a potent mode of energy dissipation.