Therefore, it is tough to forgo their workout routine when people become overaged and fitness freaks. But not now! We have come up with an ultimate guide having all the necessary information about exercise machines for seniors. Best Rowing Machines for Seniors The best exercise machine for seniors is a rowing machine; A Rowing Machine is designed to replicate the actions and sentiments. Rowing is a well-known Olympic sport which is the oldest sport, even older than football, baseball, and basketball.