My not-all-that-athletic self can easily run 2 or 3 sub-7 minute miles back to back. If a pro athlete of any kind (Not snooker or chess, though they have to be in decent shape as well) cannot run one, he better go train awhile.
operator: throw an NBA player in a swimming pool... even if he hardly knows how to stay afloat, he will be pretty damn fast. Put him on a bike and he will whip my ass despite having a million times worse technique than me. Those guys are monsters physically. (I am sure steroids help with this