This is a custom video. I didn’t get a precise script, but I did get a challenge. And I have this thing when it comes to challenges. When someone puts one in front of me, I just can’t say no. In this clip, I try to keep the position of the V-sit, which is extremely demanding. This position harshly affects my abdominal muscles and legs, and the strong contractions make my muscles tremble uncontrollably. My thighs shake violently as they spasm, and my abdominal muscles burn. My whole body is shaking, and I can't hide the painful expression on my face. I’m dressed in short shorts, black pantyh... Show more