The discovery of the relation between the quantum energy-momentum tensor (EMT) and General Parton Distributions [1, 2] provides a unique way to study the EMT of the nucleon [3,4]. \par It was shown that the expectation value of the EMT for an unpolarized proton target in the forward limit has the same structure as that of a perfect fluid . The generalization of this result to other class of frames  leads to the EMT of structure similar to that of an anisotropic perfect fluid density. In this case additional terms can be related to the internal energy and transverse/radial pressure inside an unpolarized proton target. \par We illustrate these results using current phenomenological knowledge of the EMT form factors. \\ \\ References. \\ 1) X.-D. Ji; Phys.Rev. D55 (1997) 7114-7125. \\ 2) X.-D. Ji; Phys.Rev.Lett. 78 (1997) 610-613. \\ 3) M.V. Polyakov; Phys.Lett. B555 (2003) 57-62. \\ 4) M. Burkardt; Int.J.Mod.Phys. A18 (2003) 173-208. \\ 5) C. Lorce; Eur.Phys.J. C78 (2018) no.2, 120. \\ 6) C. Lorce, L. Mantovani, B. Pasquini; Phys.Lett. B776 (2018) 38-47.