30r20 - kinda like old school

Couldn't decide on what to row at lunchtime - considered a r24 ctc shot but came to my senses and went for a 30r20 - instead of targeting HR specifically I thought I'd row to pace and see how I got on - target 1:55.0 pace and keeping a check on my back all went well. Ave HR was 140 which is below 70% HRR although I topped out at 156 bpm which is just over 75% all seems well with the back - but will continue to take it easy