Sit Up Start by lying on your back with your arms across your chest.Flex knees at a 45° angle.Arms crossed touching clavicles.Waist flexion.Abdominals contracted. • Elbows touching the upper thighs.Head in a neutral position. Read more articles Previous PostShoulder Bridge Next PostSquat You Might Also Like Burpee November 2, 2019 Dumbbell Chest Press November 8, 2019 Russian Twist November 8, 2019