If you ever rode a bike, you might notice that trying to lift yourself up (while sitting on the saddle and riding) when travelling at high speeds is more difficult than when you are travelling at low speeds. Why is this? I think that the reason is more to do with the fact that when you lift your bike up while riding, you are pulling backwards somewhat and so naturally when you are travelling fast, you are pulling against a lot of force so you tend to spread more of your energy on pushing the bike back rather than upwards. The net result is that you don't lift the bike up as much. Do people agree?