I started riding at the beginning of this April. Like you, I haven't ridden since I was a kid and I'm trying to lose about 75 pounds. My oldest wanted to go out for a ride and I figured it would be easy to keep up with her. HA!

10 minutes later, I was SURE I was going to die. The kid ended up going on without me for another 15 minutes while I sat on the porch and caught my breath and tried not to pass out.

So now it's been about three weeks, and I just did a 3.5 mile 30 minute ride. I was breathing hard afterward, but I'm plenty conscious and really don't feel like I need to make funeral arrangements. So keep it up. A little at a time, 10, 15 minutes a day, build up, and you'll be fine. Push yourself, but don't completely overdo it. You'll be there in no time!