  We use the F-theoretic engineering of four-dimensional rank-one
superconformal field theories to provide a geometric understanding of the
phenomenon of supersymmetry enhancement along the RG flow, recently observed by
Maruyoshi and Song. In this context, the superpotential deformations
responsible for such flows are interpreted as T-brane backgrounds and encoded
in the geometry of elliptically-fibered fourfolds. We formulate a simple
algebraic criterion to select all supersymmetry-enhancing flows and, without
any maximization process, derive the main features of the corresponding N=2
theories in the infrared.
