I fine rowing on Ergs particularly hard work as cardio goes. There's no momentum stroke to stroke, so every single one requires full effort. When I did this a

I fine rowing on Ergs particularly hard work as cardio goes. There's no momentum stroke to stroke, so every single one requires full effort. When I did this at uni, my strategy for coping was to spend the entire time doing mental maths / projections for how much any drop in rate would impact my final time (and conversely how much could be gained by an increase if kept up until the end). It's not hard maths, but it was the perfect distraction from the problem of dealing with how little effort I had left vs what I wanted to achieve. Trying to think on abstract problems was more than I could achieve. Not thinking about anything but my next stroke wasn't enough. It was (and remains) the perfect strategy for me.