Hi I've been training to join the army for some months now, I have to do my 1.5 mile run in 14 minutes or under. 14.40 has been my best I struggle with my breathing I start breathing heavy and quickly. I have been doing sprints, intervals and longs runs but so far it hasn't got me where I need to be. I am on my last chance now I have 3 months to get my run time down. I was thinking that maybe It was a sign of me being unfit and instead of just running I should be working on all round fitness so I have started doing circuit training and working on my strength and core as well as running. Would people advise this ? I don't want to waste time if I fail again I'm not aloud to try for a year. Also I am trying to eat a bit better I weight 12stone 2Ibs and I am 5ft 6 so I'm not massively over weight.
Thanks in advance