For my arms, I have started enjoy doing heavy to light sets of 1-10 reps.
For example, I do the preacher curl with the full stack for 1 rep, then lighten the load by 1 pin and do 2 reps, then again for 3 reps until u have done 10 reps on the final set!!It is brutal but works really well, best done with a partner as this will help to keep the speed of weight change fluid.

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