As we all know leg days separate the men from the boys and i always try to leave my ego at the door and train my legs till i cant walk. Due to genetics i have to train them harder than some people because i have some very good strength but adding mass to my legs is like trying to force veggies down a childs throat. On days when i can tell i have had a good leg workout by the time i crawl into bed i am achy and my joints are stiff, throat gets swollen and raw, as if i have a cold or weakened immune system and usually for a day or two after (especially when i max out) my immune system just crashes and i feel like shat! Since legs and lower back are literally half your body or more i know most rest days are after a hard leg day as it is taxing on the body thus a good diet is essential on this day most of all. Is this feeling due to something im doing wrong with training or is it my post workout diet that is lacking? Anyone else ever feel this way? Any help would be great because i love leg day and i finally have a routine that has my legs constantly growing (in size as well as strength) but the sickness thing is getting on my nerves.