Well, I'm a distance runner who has a heel spur, not really painful, but if I continue, I can just f**k things up. So I jumped on a pushbike to try to get the fitness going. Pushbikes just don't give me the hard work I sadistically crave. Ever ridden a pushbike when you: Hold the left lever in (rear brake) when you stop so you don't stall the pedal engine? Only get off the left side so you are on the stand side? This bike does not have a stand. Stay on the seat at traffic lights? Use the front brake carefully on gravel? Keep checking the non-existent mirrors? Check the non-existent speedo for the gear you are in (think the bike had 3 front and 9 rear cogs) Lube the chain when you get home? (And my ride is belt drive?) I'm a real goose, but can laugh at my shortcomings. At least I had a decent workout as the bike is a mountain bike.