If BFS is 9 meters in diameter, it requires a 14 RPM spin rate to generate 1g at the skin.

F=v^2/r, 9.8=v^2/4.5

44.1=v^2

v=6.64 m/s

v=pi×9×spinRate

SpinRate=.235 rotations per second

14 RPM

Given that 6.64 m/s is about 15 MPH, if you sprint, you generate your own gravity equivalent force. Mobile exercise bike might be the way to go.

Of course, the track radius would be less than the outside diameter.

It seems like it would be really weird to have one's head moving at roughly half the speed of their feet (2 meter tall person typing). (One quarter the force at one's head also)