Hi, Im quite new to jogging (have been jogging for 4-5 months) and have only been running on my treadmill as i cant afford outdoor clothing at the moment! I have signed up for a 5k and am currently running 5k in 45 mins. I have read that if you only train on a treadmill it hits you hard when you then run outdoors on pavements etc, is this true? its got me really worried!! thanks for any advice!