60r20 75% HRR - back to work

In two senses of the word - back to work after Xmas and back to some tougher rows - I've given the cough/sore throat a few days so it has had it's time - as I made into work earlier than needed but too late to row I stretched the lunch break out to include and hour on the erg - r20 and after a few minutes decided I could test the waters at 75% HRR - all good apart from a slight "bark" on completion.

#onwards&upwards

For some reason the 910xt lost connection partway through - I kick started it again but the readings are off