Dumbbell bicep curls. 2 X 12.5 kg. Simultaneous lifting with both arms. Eccentric lowering. 2 mins break between sets, during which I did x( 10) reps of floor to lock to floor press-ups. Curl Reps were to failure, per set.

25 (10) - 21 (10) - 12 (10) - 12 (10) -11 (10) - 9 (10) - 9 (10)

I've stuck to having a 2 min 'break' between dumbbell reps, as I'm loathed to put a time pressure on myself to complete the arm curls and thereby risk rushing and a possible loss of form leading to potential back issues. Eccentric lowering also limited now to a count to 2 secs only, again to try and maintain form.