There are a few things that you can do in order to prevent high hamstring tendinopathy when cycling. First, make sure that you warm up properly before starting your ride. A good warm-up will help to increase blood flow to the area and loosen up the muscles. Second, avoid cycling in cold weather as this can make the tendons tighter and more vulnerable to injury. Third, make sure to stretch the hamstrings after your ride. This will help to keep them flexible and prevent them from becoming too tight. Finally, if you feel any pain or discomfort in the area, stop riding and rest until it goes away.