Sit on the ground in the corner of the sofa, with your back against the sofa, your arms comfortably supported on the sofa, your knees bent, your legs straight, and your toes pointing to the ground. Tighten your back, straighten your knees and point your toes up.

Time: 1 min

Efficacy: Tighten the abdomen and stretch the knee joint.

lift

Lie flat on the ground in front of the sofa, with your calves flat on the sofa and your arms stretched forward. Take the hip as the axis, use the strength of abdominal muscles, lift your body, and extend your arms forward to your feet. Over and over again

Time: 1 minute 30 times, take a deep breath during the action.

Efficacy point: abdomen.