Got to bed late last night (the joys of working in the evenings) but I got up this morning and did 20 minutes of rowing with only a couple quick water breaks. Slowing down my stroke is going to make it a lot more sustainable I feel.

My issue with rowing is that you have to stop to drink water, unlike treadmill or biking where you can just slow down but keep moving. But otherwise I much prefer rowing to running, and stationary bikes don't feel the same as just riding my bike.