knees-in-air sit-ups

Knees-in-air sit-ups are a challenging variation of the traditional sit-up exercise. In this movement, the feet are flat on the floor and the knees are bent at a 90-degree angle, with the shins parallel to the ground. This requires greater activation of the hip flexors than traditional sit-ups, making it more challenging for the core. Additionally, by keeping the feet planted on the ground, this exercise emphasizes the rectus abdominis muscles, which are responsible for spinal flexion. To perform knees-in-air sit-ups, start by laying on your back with your feet flat on the ground and your knees bent at a 90-degree angle, with your shins parallel to the ground. Place your hands behind your head or crossed over your chest. From this position, slowly lift your upper body towards your knees, focusing on engaging your core muscles throughout the movement. Exhale as you lift your upper body and inhale as you lower yourself back down to the starting position. Repeat for several repetitions, focusing on maintaining proper form and control throughout the exercise.