I've been running regularly for about 6 years, with breaks for the latter stages of pregnancy and recovery. I've never been hugely speedy (nor have I tried to), nor have I been interested in competing, but have kept it up just to avoid becoming too much of slob.
For the past couple of months, though, it's been seriously difficult. 30 seconds in, and I feel like a sack of spuds. I'm consistently much slower than I was even 6 months or so ago. I sometimes stop and walk (which I never did before), and once I've done that I find it very hard to start running again. I can't understand why it's become so difficult! Is it just age (I'm 39)? Does anyone have any ideas?
A bit of background: I'm slim, don't have any health problems, and typically I run only twice a week, covering 18-20km in total.