Evolution of different quantities as a function of time. (a) Relative changes in the kinetic energy ΔE_kin (blue), magnetic energy ΔE_mag (red), internal energy ΔE_int (magenta), and total energy ΔE_tot (black). The dotted magenta line shows a simple double adiabatic prediction for the internal energy (ΔE_int)_cgl. (b) Pressure-strain rate ψ (magenta) and resistive dissipation rate Q_η (red). (c) (Magenta) Non-compressive and (purple) compressive parts of the pressure-strain rate, ψ_i and ψ_c, respectively. (d) (Magenta) Non-gyrotropic and (purple) gyrotropic parts of the pressure-strain rate, ψ_n and ψ_g, respectively. The dashed purple line shows the running average of ψ_g. The yellow region in panel d denotes the time interval of two periods of pressure-strain rate oscillations for further reference.