Front plank. A brilliant exercise for your core! Main muscles worked: Rectus Abdominis, Internal and External Obliques, Iliopsoas, Tensor Fasciae Latae, Quadriceps, Sartorius, Pectoralis major, and Serratus Anterior. Muscles are exercised isometrically.
Front plank with twist Get on your knees and forearms with your elbows directly under your shoulders, fingers interlaced. Stretch your legs long, and come up on your toes into plank position. Exhale while twisting slightly to the left from your waist only. Inhale, returning to the starting position, then repeat on the opposite side—that’s 1 rep. Do 3 sets of 10–12 reps.