There's this old adage in running that says never increase your mileage more than 10% in a week. EVER.
She even refers to it as "one of the most important and time-proven principles in running"
Wow. Serious business. Surely that 10% must come from some very rigorous science to be so strongly entrenched!
Nope. Someone pulled it out of their butt, other people repeated it, and it became running gospel.
This kind of anti-scientific stuff drives me crazy. I've frequently broken this so-called rule - in fact this year I've run once a week as many times as I've managed twice a week. And guess what...
... nothing bad happened. I got to run more. It was great.
A Better Rule
What rule do I follow instead? It's the "listen to your body" rule. If something doesn't feel right, give it attention. If everything feels fine, give 'er. It's worked way better than arbitrary percentages pulled out of people's butts.