Young man riding BMX bicycle on a ramp Photography by Dimitar Hristov - 54ka acrobatic action active activity adrenaline adults air bicycle bike biker biking bmx boy caucasian cross cut-out cycle cyclist danger dangerous exercise extreme Extreme Sports figure fly freeride freestyle fun high isolated jump lifestyle male man mountain mtb one one man One Person park people Play racing Ramp recreation Ride rider risk shadow silhouette skate park sky speed sport sports street teenager trial trick urban wheel white white background young youth