Strong, Timber Pose, Obliquely Not Facing Floor
Puzzle 4 of Yoga Hard Pack
Question is: Strong, Timber Pose, Obliquely Not Facing Floor
and the answer is: SIDEPLANK
Word Meaning:
SIDE PLANK — (yoga) A yoga pose in which the body is held rigidly straight, with weight resting on the feet and one arm, where the upper body is held off the ground by the upper arm, leaving the lower portion of the arm on the ground.
Definitions from Wiktionary.