back pain?

[Antaresia]

I've been riding for three weeks, I've accomplished commuting to work, and just today I biked that ugly stretch of 20 up-hill blocks (kind of bummed about the girl who zipped past me like it was nothing).

But I'm getting a little bit of lower back pain, is that normal for a new rider? Has anyone gotten it and gotten over it? Tips? I keep reading about "bike posture", but I think I have okay posture. I'm a bit frustrated about this.

Stupid lower spines.

Oh ya, I guess this is sort of an intro post for me too. My friend wants to loose some weight, so one day while chatting fb I ask "when are we going to walk the sea wall?" and she says "how about now?". So we go, and I get inspired by all the people biking it. "I remember when I use to have a bike, over a decade ago. I WANT TO BIKE THE SEA WALL". And I throw myself into it, reading all I can about bikes before I get one (mostly how to lock it properly, and not get killed in traffic). I had no idea there was such a strong sense of community out there. That there were so many different bikes styles. Where to start?!

I got myself a cheapo used bike to start out on - early 80's CCM mixte. I realized I could commute to work. So, now I'm a commuter with a junky bike I love, high hopes, beer in my granny basket, and lower back pain.