I've just started running again after a 3 month break (knee injury

). I'm not even nearly as good as I was but I'm already seeing progress: 20 minute warm-up at 4.20 pace (just under 7 minutes per mile for you weird people who use miles

) isn't that hard now. However, seeing that my teammates made insane progress is a bit disappointing. Like, when I came back one of them told me he had competed in a 10K the previous day and he pushed so hard that he got a 3:49 last kilometer. I thought it was fast, until I discovered he actually meant that he was going slow at the end

, he started at 3:20 pace (5:20 mins per mile) and couldn't keep it. I could barely keep up with them when I was running, now it's even worse.