Averaged quiescent spectral profiles of the Lyβ line detected in the FUSE observations of AD Leo, AB Dor, and AU Mic. The Lyβ profile of AD Leo is asymmetric with a broader profile on the red side, whereas the AB Dor profile shows a weaker red asymmetry. AU Mic completes the sample with a Gaussian profile with a small but distinct extra emission in the blue wing. The spectra were extracted from the LiF1a channel and represent night-time observations only.