As with bodyweight training, yoga has a variety of plank poses ... little spinal twist in the Warrior poses, but you still engage and strengthen the same lower body muscles (quads, glutes ...
While some asanas can tone your thighs or arms, there are yoga poses to tone your whole body ... Chaturanga Dandasana (Four-Limbed Staff Pose or Low Plank Pose) Start with the plank position ...