Bikes are not cars, thankfully. Instead of sitting in them, naturally we sit on them. In lieu of smooth power steering, we manually operate a vibrating handlebar connected to the front wheel. Rather than swigging a caramel macchiato at the stoplight, we spend our idle time balancing a top-heavy machine weighing 300 to 900 pounds. And if you’re a dirt rider or vintage geek, you may have to first kickstart an engine, old-school style.
Yes, riding is a physical task—and like with any sport, you’ll get better if you prepare for it. “Mobility is the main thing,” says Peter Park, whose company Platinum Fitness trains SX/MX racers Ken Roczen, Blake Baggett, Christian Craig, Adam Cianciarulo, and Chase Sexton. “Even people who used to be athletic lose mobility from sitting and…