impact on bones from cycling while standing?

if it hurts, don't do it.

thank you anyone else? i have been stationary biking for a few weeks with no pain at all so i guess ill just stick with that unless i get a better fitted bike

Your bike probably doesn't fit properly, or you need more time for your body to adapt to the position. If it gets worse, go to a bike shop and have them help fit you properly. If it gets better you're good to go.

A bike, or even bike shoes (sneakers or otherwise), that doesn't fit right can be brutal on your body! I screwed up a knee royally during a year that I was bike commuting everyday. It ached constantly.

It was weird, I think I was kind of over pronating every pedal stroke. Now when I bike, I wear a kind of stiffer/more supportive medially shoe. And I also ended up raising my seat in the end.

The weird thing I am the opposite running, only more flexible shoes keep me in the clear.