So im going running with some friends in a couple of days and i havnt been in a long time (knee injury etc etc etc). Im pretty active (workout 2-3 times a week, mountain bike at least 2 times a week, and hiking a couple of times a month) so im wondering if all my activities have prepared my muscles so i at least wont get massive leg cramps the next morning after running. Pretty much what im asking is - has anyone here been biking for years and years and then all of a sudden tried running one day and had insanely sore muscles the day after that. I know its a new "exercise" and i probably will get some soreness but i want to know if its going to be the kind of soreness after a hard ride or the kind of soreness after your first time working out for months. I just dont want to be crippled the next day at work.