Marathon Training

Well I'm going to start my marathon training up again and hope this time my knee joints will hold up to it. I tried doing this a few months ago and totally screwed up my knees. I found a different training program that I feel will start me out at a much slower training pace. I will continue to do my cycling in the evening however I have to switch my nutrition up to less protein and a lot more carbohydrates. I also will switch all my lifting out for body weight exercises. Wish me luck everyone and please if anyone happens to come across this post leave me some encouraging words for motivation!