This is my 3rd season riding. I started with a hybrid bike with out clip in shoes and wore my tennis shoes. I then decided to go with a lighter bike because I was riding on the road more than trails. I kept my tennis shoes and had the same problem with numbing and almost like dead feet, and then the pain would go up my leg. I went to several bike stores and they all told me I needed clip in shoes. I converted! I was also told to purchase them one half size up, like a runner, so you have room when swelling occurs. I went with a MTB (mountain bike shoe) I prefer those to road bike shoes for now and I have not had a problem with my feet. I also have noticed a significant increase in strength and peddling ability,and I dont get as tired. So it might be worth it to look into it further. They dont have to cost alot either!