Replying to Running with camera

hi,

i've recently been getting into trailrunning. i did a few nice trails in summer which went up to around 2000m, and sometimes totaled 10-20km in a day.

now that i'm living in a city (with no chance of skiing without going to stay somewhere for a few days), i have just started going on runs to keep fit. i don't really enjoy running on streets or tarmac though, i prefer being out on trails or going up mountains and hills, especially since i had knee surgery and would like to keep the impact at a minimum.

anyway it turns out there are a few cool places where i'd like to shoot some photos, which are within accessible running distance, but i'm worried about running with a dslr. i heard that the motion will do bad things to the crystals (?) or the sensor inside my camera. i would run with the lens & body separated, in my pockets.

is this true or just a bullshit myth? any experience or tips appreciated, thanks!