What is the ideal angle for your knee when your feet are in the stirrups?

The ideal angle for your knee when your feet are in the stirrups is about 90°. This angle is significant because it provides the best position for maintaining proper body alignment and control while riding. A 90-degree knee angle helps ensure that the rider's leg is in a relaxed, yet effective position. This alignment allows for better weight distribution and balance, enabling the rider to respond more effectively to the horse’s movements.

Additionally, maintaining a knee angle around 90° helps to prevent strain or discomfort that could arise from too much flexion or extension at the knee joint. A position that is too tight or too straight can lead to fatigue and impede the rider’s ability to communicate cues to the horse efficiently.

The other angles mentioned either promote poor positioning or may lead to discomfort and reduced effectiveness when riding, which is why the 90-degree angle is generally regarded as the most suitable for a strong and effective riding posture.