**
I think extra strength (of the non-brute variety) and training can improve physical finesse. Witness ballerinas and martial arts grandmasters.
**Two, I don’t hear many men complaining of their women lacking “physicial endurance” in the bedroom. Interest, perhaps. Endurance, no. On the other hand, many women may wish their men had more staying power (ability to delay orgasm), but this has nothing to do with cardiovascular endurance. **
Point taken. However, my most, uh, memorable experiences have been marathon in duration. Would top-flite fitness of myself and my partner have improved upon this?