How much is 'consistent running'?! I ask because i did the parkrun the day after circuit training and I felt dead! Im just not sure how much I can/or should be able to do in terms of miles, sessions, ciruits, weight training.
Ive set myself a goals firstly for a 5km run in 20 minutes (ambitious). Secondly, I am trying to improve my whole upper body strength. Im pretty poor at that.
Currently im 27, and the last 2 weeks I have ran 5km both hitting around 25m 20secs. Prior to these runs, the first weeks of January i ran around 15 miles a week (which I was chuffed with, as I have never ran that much before in my life).
I have read that to improve 5km times I should be doing, a long run, a speed run, etc. My question is, would the high intensity circuit training give a similar effect as say hill sprinting, or fartlek? I understand its not running, but i mean in terms of increasing VO2 max and all that.
Or, should I be able to cope with plenty of circuit training and plenty of running, without wearing myself out and going backwards?