Top panel: evolution of the surface rotation rate of TOI-849 for a fast, medium, and slow rotator Ω_in = 18, 5, 3.2 Ω_⊙ (green, magenta, and black line, respectively). The red-dashed line indicates the evolution of the critical rotation velocity (Ω_crit), defined as the velocity at which the centrifugal acceleration at the equator becomes equal to the gravity. Bottom panel: evolution of the XUV luminosities computed for each of the considered rotators. In both panels the starting point of the tracks corresponds to the dissipation of the protoplanetary disc (6 Myr for the slow and moderate rotators, 2 Myr for the fast one).