Running a 5k

"I've gone through phases. Ive been off training for a while, tryi to get back into running," he says. "What i found is if i go and do a training station where iam running a little bit harder and then walking rest breaks in between, first of all, it feels better to run quicker than just plodding along." He adds that the old way was run a five k and runit slowly at six mints a k. Andi am saying the overall speed might be six minutes a k, but i'm sometimes rnning five minutes, ok? Full 300 meterso is there some base, scientific oaces support that? That might not