Is this normal? I've just recently started running (I used to be too fat). My normal routine has been doing a few sprints at 9.5mph on the treadmill HIIT style after lifting. By my third sprint, and when i get off the treadmill, i have a twingy kind of pain in my lower shins. Is this normal for someone fairly new to running? Will this pain subside over time? Or is this a bad sign, and should i go back to lower intensity or cycling?