Rowing - stationary, very vigorous

This activity burns approximately 789 calories per hour

Rowing on a stationary rowing machine at a high SPM (strokes per minute) is one of the best ways to maintain and develop aerobic fitness. Maintaining a rowing pace between 35 to 40 SPM will generate resistance and elevate your heart rate. To get even more benefit from your rowing machine, consider long endurance rows punctuated by high intensity sprints.