Atheltics - Crouched sprint start (set)

The video tutorial explains the crouched sprint start, a crucial technique in sprinting and athletics. It highlights the key technical points, such as the position of the hips, knees, shoulders, and head. The hips should be slightly higher than the shoulders, with the front knee at a 90-degree angle and the rear knee at 120 degrees. The shoulders should be above the start line, and the head and neck should align with the spine. A demonstration follows the explanation, reinforcing the technical points. The video concludes with a thank you and encouragement to viewers.

What is the approximate angle of the rear knee in a crouched sprint start?

What alignment should the head and neck have in relation to the spine during a crouched sprint start?