When it comes to full-body cardio workouts, it’s hard to top a rowing machine routine. And if you want the highest-performing rowing machine for your home gym, look no further than a Concept2 rower.

Remember a couple months ago when Hydrow launched the first-ever Peloton-like rower? Or how about a few weeks ago when Row House announced they were coming to Lovejoy Wharf? And remember just last ...