Hi, I'm nikki and I haven't ridden a bike in over 30 years. I'm 5'6" and 275. I've had 8 abdominal surgeries in recent years, so my ability to do any physical activity is somewhat limited, but a physical therapist suggested cycling more for my knees than for anything else. I live in the Bay Area and am hoping someone has a recommendation for a body-positive bike shop. All I know so far is that I need a bike that's lightweight, because I don't have the strength for lifting/hauling a heavy bike around - and at least initially, all my riding will be fairly short rides in local empty industrial parks or along paved park trails, so I don't need anything fancy, but I will need to be able to get my bike on and off a rack on my car. And lacking the flexibility I had when I was younger, I want the kind of bike that's easy to step onto. Thanks for any advice!