I have recently just started running, I am quite a big guy (fat and muscle) I weigh 105kg at 5ft 9.5 and 30 years old.
I started running 2 weeks ago. First run, decided to go all in and did 6 miles straight off the bat in the heat (UK), it took me 1:00:03 to run 6.35 miles before I had to stop and throw up, nearly collapsed etc... since then been doing 4 miles and 3 miles here and there.
Today I ran my longest, which was 8 miles in 1:06:46 averaging about 8:20 per mile. I would like to get this down to 6 minutes mile. How quickly could I get this down,? Does anyone have any plans? 8 min mile to 6 min? Ideally I would like to keep some size. Is it unreasonable to expect my mileage to get down from from 8:20 to 6 min in 3 months???? but still remain relatively big? Are there any 90kg-100kg+ guys who run 6 min miles?
Lastly, when i first ran I was out of breath and kept huffing and puffing, today I found it really strange that I ran my longest and fastest PB , I did not feel out of breath at all, but my legs were totally drained. I felt had my legs not given out I could of done more! Yet my legs are quite strong in terms of squats and leg press.. Any tips? Does anyone else get headaches after their run?