Prop yourself up into a forearm plank while lying facedown. Keep your elbows beneath your shoulders and your hands in fists. Parallel forearms. Hold 10–20 seconds per set.
Face up, arms above shoulders. Bring your knees perfectly over your hips and bend your knee so your calf creates a 90-degree angle with your thigh.
Lower your left arm and straighten your right leg. Switch sides. 14 alternate repetitions make a set.
Stand with your feet hip-width apart and grasp a dumbbell in your right hand, palm towards the chest.
Bend just at the waist and keep your back straight. Hold for one second, then repeat. 12–20 reps.
Shoulders centered, feet shoulder-width apart, lift a barbell off the rig. This core-focused back squat uses less weight. Sit with bent knees. Heel press once. 12 sets.
Dead insect inverted. Shoulders over wrists, hips over knees. Core-lift your right arm and left leg. Kick back and palm inward.
Wait until your arm and leg are the same height as your torso, then touch your elbow and knee beneath. One rep per side, five sets.