What is this all about? I know we all have good days and not-so-good days, but I was so elated after finally achieving 5k the other day. I gave myself an extra day's rest, because I was shattered, so went trotting off today thinking I'd do a nice, easy 30 minutes before tackling the 5k route again next week.
Nope. Legs stopped after 10 minutes, so walked for a minute and started up again. Managed another 5 minutes but I was staggering to the point of not picking up my feet properly, so walked again for 3 minutes. I was determined to make it to at least 20 minutes, but gave up at 18 thinking that at least I'd tried and been out for some sort of run.
But seriously - why does this happen? Anyone else get this sort of thing? The six-year-old in me is shouting, "It's not fair!"