No elevators, no escalators. Given the distance between floors at the Oregon Convention Center, regular stair use will tone you up.
Most people will need to sit during the conference talks and meals, so that everyone can see, but during in-between times, visit the exhibitors or just hang about in the halls and chat with your fellow OSConers.
The conference caterers provide ample opportunities for healthy eating.
Now I’m beginning to ask for difficult commitments. Don’t be seduced by all the vendor receptions; just have your drink and get home early for a sleep that will keep you perky through the next day
Bring your running or walking shoes to join Nate DiNiro and friends in the “Couch to Quantified Self” run. Walkers are welcome too.