This is my first post on here, only discovered the site today.
I'm on wk4 and struggling a lot, wk4 run 1 was hard but i managed most of it apart from walking the last 2 mins of the last 5 min run but run 2 was appalling! I ran the first 3 and 5 min runs then it all went down hill..... my lower legs were extremely heavy and my shins ached like mad then to top it all I had a horrible sudden dizzy spell and ended up sat on a wall! My running pace is extremely slow so i know its not because im running to fast, i honestly dont think its possible to go any slower! I'm 47 and desperately unfit. Shall I just keep repeating week 4 until my leg muscles catch up?