προσγυμνάζω
From LSJ
ἄνθρωπός ἐστι πνεῦμα καὶ σκιὰ μόνον → human being is only a breath and a shadow, man is but a breath and a shadow
English (LSJ)
A exercise at or in a thing, τινι Pl.Lg.647c:—Med., ὁ -αζόμενος,=sq., Gal.6.177 (v.l. προγ-) ; π. τινί Alex.Aphr.in Top.232.3; πολέμῳ -γεγυμνασμένος Plu.Marc.27. 2 metaph. in Med., enter into a contest with, τινι D.Chr.36.27: abs., M.Ant.6.20.