Physically? It's the wind whipping by you and through your hair and against your face... your stomach tossing and turning, the g-forces rattling your head when you turn too sharp...

[ A, uh, wooden pole between your legs. Learning how to ride comfortably is as important as getting off the ground. ]

...it's freeing. Going as high and as fast as I can. And with magic spreading through my world again... I hardly got a chance to fly in that world.