Cycling without clipless pedals and groin weakness I've been cycling long-term in hills and over the last few years without clipless pedals. Over time I have found the hills to be easier to climb, but have noticed a dramatic decrease in my running ability, and recently on holiday found it difficult to walk long distances as well without pain and stiffness. Is this because of increased leg muscle (weight)? Should I get clipless pedals again?
Any thoughts? 
Thanks in advance!
Is this because of increased leg muscle (weight)?


I am confident that no, bicycling has not packed so much muscle onto your legs that they are now too heavy to walk normally and comfortably.