You become stronger by riding bike, that's because of your effort when you ride. By making the bike easier to ride, you actually use less effort. Is that really what you want? 😊
-sailor(Ocean & Mountain);
2020-7-29(#13113148@0)
To shift into a low gear.
-youarenotfunnyatall(草山);
2020-7-29(#13113185@0)
Is it like making dumbbells lighter? 😂
-sailor(Ocean & Mountain);
2020-7-29(#13113345@0)