Plank

Start on the floor on your hands and toes (or forearms and toes for a forearm plank), with your hands directly under your shoulders and your body forming a straight line from head to heels. Brace your core, keep your glutes and legs engaged, and tuck your pelvis slightly to avoid arching your lower back. Keep your neck neutral by looking slightly ahead of your hands, and hold the position without letting your hips sag or rise. Breathe steadily throughout, focusing on maintaining tension in your abs, glutes, and shoulders for a strong, stable plank.