As an indicator of “beauty” and “sexiness”, the “mermaid line” is essential for you as a man. One of the most known is the “Vitruvian Man human scale” (TheVitruvianMan), that is, we often hear the “Golden Ratio”, Da Vinci especially to the male abdomen on both sides of the pelvis close to the top of the two V-shaped line called the mermaid line. line called the mermaid line. Just like a woman’s bikini line. Do you want to wear sexy swim trunks in the upcoming summer to reveal your sexy mermaid line? The official name of the mermaid line is “internal and external abdominal obliques”, when you are at home, you can lay a flat, soft mat on the floor, and practice the “lower abdominal reverse curls” and “side body support” two movements, you can The first thing you can do is to practice the two movements of “lower abdomen reverse roll” and “side body support”. 1, lower abdominal reverse roll: to train the lower abdominal muscle groups for the purpose. First of all, lie flat on the mat, hands open and flat against the ground, back against the ground, stomach inhalation put up, feet up, pubic bone as far as possible up to touch the thoracic vertebrae, buttocks followed by lifting counted, a group of 12 to 15, rest 30 seconds, and even do 3 groups. 2, side body support: to train the internal and external oblique muscles for the purpose. First side lying on the mat, the right arm to support the body, shoulders, hips, toes in a straight line, stomach tightening, waist sinking, keep breathing and then up, feel the side of the abdominal muscles contraction force, sinking and lifting up the continuous action counts, a group of 12 to 15, rest 30 seconds, even after 3 groups to do the other side and then do.