E2MOM for 10min: 
:20 second AMRAP Echo Bike Cals
Then:
E2MOM for 10min:
:20 second AMRAP Row cals
For Total Calories

Now that I have passed the 5 million meter mark on the rower, I want to start mixing in some more variety to my cardio workouts. Echo sprints are a great way to improve muscular endurance and stamina. Touched 90rpms on the bike each round and 1400+ calories on the rower, going north of 1500 during the fourth round.