I’m an avid athlete and I typically run on the treadmill or elliptical five times a week for about an hour. I’ve stayed away from these exercise bikes in the past because I figured it wasn’t really targeting my core as much as I want. However, the treadmill and the elliptical are causing seriously tight hamstrings that I just can’t seem to shake no matter how much I stretch. Someone recommended using the exercise bike. So for all you exercise bike lovers, can you really get the same type of cardio workout on these machines as you would the treadmill or elliptical? Also, do you notice tight hamstrings or issues with weakened hip flexors if you use these bikes often? I really want to get some amazing cardio workouts in without making my hamstrings suffer.