I don't call it being frugal but being "effective". Mm... for starters, yeah, bike good idea. Easy to park, fast in a small city and wonderful during summer. The only sucky time is during the thawing of snow, but I guess it's the same for cars.
Also I have just breakfast stuff at home, I take breakfast at home and then lunch at the cafeteria at work and no dinner (good sport diet) so I have less to buy at the supermarket and don't have to cook in the afternoon after the gym. Aaaand... dunno....
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