CREW by True Rowing brings the world's most beautiful water and a professional instructor into your home to help you cut your workout time in half by using 86% of your muscles.
Great instructors on video in your home. Also has quiet journeys to rivers and (Walden) ponds. I have used it for the last 65 days in a row.
Fun, best exercise: 86% of your muscles, burns twice the calories per unit of time than bikes/treadmills.
The CREW rowing machine is not available yet. The app is in Beta.