TECHNIQUE: Sit on Step 360 with legs extended. Cross legs over and under while extending arms forwards and maintaining core engagement. ADVANTAGES: Greater core engagement and stabilization demands over regular Mummy Kicks. Exercise tubing increases resistance. FAULTS: Not maintaining knee extension or core engagement/hip flexion; pelvis tucking under resulting in rounded back, knees track outwards. SCALING: Remove tubing to reduce workload; perform Mummy Kicks on the floor if core engagement and stability demands are too great. ONLINE TRAINING: www.sandandsteelfitness.com/online-training EXERCISE DATABASE: www.sandandsteelfitness.com/exercise-database PERSONAL TRAINING www.sandandsteelfitness.com/personal-training