6. Check your posture 检查你的身体姿势

To keep your tummy flat you need to keep your back strong too as the band of muscle around your waist also helps support your spine. So stand up straight and keep your back and stomach muscles taut.

想要保持腹部平坦，同时你也要保持背部强壮。因为你腰部周围的肌肉群同时也支撑你的的脊柱，因此站直了，就能保持你的背部和腹部肌肉紧凑。