Walk your hands out, walk them back. Full-body warm-up gold.
Keep your legs as straight as you can while walking out to load the hamstrings.
Walking your hands out with straight legs puts the hamstrings on a long, loaded stretch that deepens with every step, while the glutes work to control the hips through the hinge on the way down and back up. The plank moment at full reach adds a stability checkpoint before you reverse. It earns its place at the front of nearly any warm-up because it opens the posterior chain, wakes up the trunk and rehearses the hinge pattern, all in one slow trip along the floor.
A soft bend is fine if your hamstrings are tight, but keep the legs as straight as you can manage. Straighter legs are what load the hamstring stretch. Bend just enough to keep your back from rounding hard, no more.
Until you reach a strong high plank with hands under or slightly ahead of your shoulders. Walking further into a sagging, overstretched position turns a warm-up into a lower-back complaint. Plank, pause, walk back.
Once the basic version feels easy, sure. A push-up at the plank position turns it into a fuller upper-body warm-up. Skip it on heavy pressing days if you want to save your reps for the real work.
