You put a lot of stress on your hip flexors when you sprint or kick. Thatâs why athletes, especially runners, soccer players, and martial artists, are especially prone to hip flexor injuries that result in hip flexor pain. Hip flexor pain is usually felt in the upper groin region, where the thigh meets the pelvis. To avoid hip flexor pain, you should pay more attention to these muscles, Dr. Siegrist explains. When you are seated, your knees are bent and your hip muscles are flexed and often tighten up or become shortened.
Walking and bicycling are good exercises for bad knees because they aren't high-impact. If you belong to a gym, the elliptical machine is another good option; the machine has pedals instead of a flat, treadmill-like surface and allows you to simulate running and walking without the impact on the joints.
Any sort of exercise comes with physical risk regardless of whether or not the exercise itself is low impact. Cycling is no exception, even though it is considered a low impact exercise it can still hurt your knees and lead to issues if done incorrectly. One of the key problems that many people wish to avoid cycling is knee pain, yet many people fall victim due to the repetitive motion.