Quote Originally Posted by Wolf View Post

So my issue. This happened the first time I tried, too. Cycling makes my rear end hurt really badly. And I don't mean something I can walk off, it hurts for days, like I got kicked by a horse in the tailbone.
I have changed the seat on the bike from the original to a much softer and wider seat. This did, actually, fix the problem before. But when I started back it didn't make much difference. The pain seems to be right at the tailbone, which I don't understand at all. Does anyone have any advice about getting over this issue? I don't want it to deter me from getting on that bike. I'm biking for weight loss and health as well for the fun of it. So I don't want to lose it. Thanks!
From your description, you may be bearing your weight on the saddle a little too far back on your rear end.

First issue, bike fit. Your bike needs to fit you like a comfy old pair of jeans. Frame or standover height, saddle height, reach, and several other measurements come into play here, and if you're having to stretch out or scrunch up anywhere, that shifts where you're bearing your weight on the bike, and almost any saddle is going to hurt under those conditions.

Next step, after the bike gets fitted to you, check the saddle. A medium to firm saddle will usually ride better because it lets the load go to your sit bones and not your tender parts. The wide, cushy saddles aren't always the best solution. You might also look into getting a good pair of bike shorts with a good chamois... because on a bike oftentimes the padding isn't on your saddle, it's in the seat of your britches.

If there's a local bike shop that you trust, ask them for a bike fitting session. It's well worth the cost, and you may have to change out some parts (stem, seatpost, etc.) to get all the parts in alignment with your body.