I have just completed my 30 Minute run and I feel amazing, I was so unfit 6 weeks ago when I started this challenge (yes I did rush at the start) and it seemed like such a mountain to climb. I read somewhere not to worry or think too far ahead.
I am 51 years old, was and still am overweight so if you are wondering if you should give this a go then just go for it.
My rested heartrate is down my blood pressure is down and I really cannot recommend this enough.